MelGeek MJ6XY Refactor (#18862)

* mj6xy.h: convert tabs to spaces

* info.json: convert tabs to spaces

* info.json: apply friendly formatting

Whitespace-only change.

* rename LAYOUT_60_ansi_7u_spc to LAYOUT_60_ansi_tsangan

- rename `60_ansi_7u_spc` keymap to `default_ansi_tsangan`

* add K31 position to LAYOUT_60_iso

* rename LAYOUT_60_iso_7u_spc_split_rshift to LAYOUT_60_iso_tsangan_split_rshift

- rename `60_iso_7u_spc_split_rshift` keymap to `default_iso_tsangan_split_rshift`

* add K31 position to LAYOUT_60_iso_arrow

* add K31 position to LAYOUT_60_iso_arrow_6u_spc

* add K31 position to LAYOUT_60_iso_arrow_3u_spc

* refactor LAYOUT_60_iso_7u_spc into LAYOUT_60_iso_tsangan

- add K31 position to layout macro
- rename `60_iso_7u_spc` keymap to `default_iso_tsangan`

* add K31 position to LAYOUT_64_iso

- rename `64_iso` keymap to `default_64_iso`

* add K31 position to LAYOUT_64_iso_3u_spc

- rename `64_iso_3u_spc` keymap to `default_64_iso_3u_spc`

* add K31 position to LAYOUT_64_iso_split_3u_spc

- rename `64_iso_split_3u_spc` keymap to `default_64_iso_split_3u_spc`

* remove LAYOUT_60_iso_1u_lshift_split_rshift macro and keymap

Functionally identical to `LAYOUT_60_iso_split_rshift`.

* remove LAYOUT_60_iso_1u_lshift_7u_spc_split_rshift macro and keymap

Functionally identical to `LAYOUT_60_iso_tsangan_split_rshift`.

* rename LAYOUT_60_ansi_7u_spc_split_bs to LAYOUT_60_ansi_tsangan_split_bs

- rename `60_ansi_7u_spc_split_bs` keymap to `default_60_ansi_tsangan_split_bs`

* add K31 position to LAYOUT_60_iso_split_bs

* rename LAYOUT_60_iso_7u_spc_split_bs_rshift to LAYOUT_60_iso_tsangan_split_bs_rshift

- rename `60_iso_7u_spc_split_bs_rshift` keymap to `default_60_iso_tsangan_split_bs_rshift`

* add K31 position to LAYOUT_60_iso_arrow_split_bs

* add K31 position to LAYOUT_60_iso_arrow_3u_spc_split_bs

- rename `60_iso_arrow_3u_spc_split_bs` keymap to `default_60_iso_arrow_3u_spc_split_bs`

* add K31 position to LAYOUT_60_iso_arrow_split_bs_3u_spc

- rename `60_iso_arrow_split_bs_3u_spc` keymap to `default_60_iso_arrow_split_bs_3u_spc`

* refactor LAYOUT_60_iso_7u_spc_split_bs into LAYOUT_60_iso_tsangan_split_bs

- add K31 position to layout macro
- rename `60_iso_7u_spc_split_bs` keymap to `default_60_iso_tsangan_split_bs`

* add K31 position to LAYOUT_64_iso_split_bs

- rename `64_iso_split_bs` keymap to `default_64_iso_split_bs`

* add K31 position to LAYOUT_64_iso_3u_spc_split_bs

rename `64_iso_3u_spc_split_bs` keymap to `default_64_iso_3u_spc_split_bs`

* add K31 position to LAYOUT_64_iso_split_bs_3u_spc

- rename `64_iso_split_bs_3u_spc` keymap to `default_64_iso_split_bs_3u_spc`

* remove LAYOUT_60_ansi_arrow_6u_spc macro and keymap

Functionally identical to `LAYOUT_60_ansi_arrow`.

* remove LAYOUT_64_ansi_6u_spc macro and keymap

Functionally identical to `LAYOUT_64_ansi`.

* remove LAYOUT_60_iso_arrow_6u_spc macro and keymap

Functionally identical to `LAYOUT_60_iso_arrow`.

* remove LAYOUT_64_iso_6u_spc macro and keymap

Functionally identical to `LAYOUT_64_iso`.

* remove LAYOUT_60_ansi_arrow_6u_spc_split_bs macro and keymap

Functionally identical to `LAYOUT_60_ansi_arrow_split_bs`.

* remove LAYOUT_64_ansi_6u_spc_split_bs macro and keymap

Functionally identical to `LAYOUT_64_ansi_split_bs`.

* remove LAYOUT_60_iso_arrow_6u_spc_split_bs macro and keymap

Functionally identical to `LAYOUT_60_iso_arrow_split_bs`.

* remove LAYOUT_64_iso_6u_spc_split_bs macro and keymap

Functionally identical to `LAYOUT_64_iso_split_bs`.

* remove LAYOUT_60_iso_1u_lshift_split_bs_rshift macro and keymap

Functionally identical to `LAYOUT_60_iso_split_bs_rshift`.

* remove LAYOUT_60_iso_1u_lshift_7u_spc_split_bs_rshift macro and keymap

Functionally identical to `LAYOUT_60_iso_tsangan_split_bs_rshift`.

* refactor keymaps

- convert tabs to spaces
- update keycode grid alignment

* remove LAYOUT_60_ansi_arrow_3u_spc macro and keymap

Subset of `LAYOUT_60_ansi_arrow_3u_spc_split_bs`.

* remove LAYOUT_60_iso_arrow_3u_spc macro and keymap

Subset of `LAYOUT_60_iso_arrow_3u_spc_split_bs`.

* remove LAYOUT_60_iso_tsangan_split_bs macro and keymap

Subset of `LAYOUT_60_iso_tsangan_split_bs_rshift`.

* remove LAYOUT_60_iso_tsangan_split_rshift macro and keymap

Subset of `LAYOUT_60_iso_tsangan_split_bs_rshift`.

* remove LAYOUT_64_ansi_3u_spc macro and keymap

Subset of `LAYOUT_64_ansi_3u_spc_split_bs`.

* remove LAYOUT_64_iso_3u_spc macro and keymap

Subset of `LAYOUT_64_iso_3u_spc_split_bs`.

* remove LAYOUT_60_iso_split_bs macro and keymap

Subset of `LAYOUT_60_iso_split_bs_rshift`.

* remove LAYOUT_60_iso_split_rshift macro and keymap

Subset of `LAYOUT_60_iso_split_bs_rshift`.

* add LAYOUT_60_ansi_split_bs_rshift macro and keymap

* remove LAYOUT_60_ansi_split_bs macro and keymap

Subset of `LAYOUT_60_ansi_split_bs_rshift`.

* add LAYOUT_60_tsangan_hhkb macro and keymap

* remove LAYOUT_60_ansi_tsangan_split_bs macro and keymap

Subset of `LAYOUT_60_tsangan_hhkb`.

* standardize keymap names

Rename all keymaps per QMK guidelines (e.g. keymap using `LAYOUT_60_ansi_arrow` should be named `default_60_ansi_arrow`).

* add LAYOUT_all; refactor default keymap

Add a `LAYOUT_all` macro, and update the `default` keymap to use the new macro.

* refactor via keymap

Update the `via` keymap to match the behaviour of the `default` keymap.

* improve keyboard readme

- fix broken image reference
- improve grammar on keyboard description
- fix Hardware Availability link
- fix `make` instructions
- add bootloader and flashing instructions

* fix default_60_tsangan_hhkb keymap

Fix a keycode count mismatch.

* mj6xy.h: add matrix diagram

* KC_GESC -> QK_GESC per fauxpark

* KC_SLCK -> KC_SCRL per fauxpark

81 files changed, 3231 insertions, 5502 deletions

diff --git a/keyboards/melgeek/mj6xy/info.json b/keyboards/melgeek/mj6xy/info.json
index 7bd66020b0..cdd2e05749 100755
--- a/keyboards/melgeek/mj6xy/info.json
+++ b/keyboards/melgeek/mj6xy/info.json
@@ -8,3455 +8,2126 @@
         "pid": "0x6060",
         "device_version": "0.0.1"
     },
+    "layout_aliases": {
+        "LAYOUT_60_ansi_7u_spc": "LAYOUT_60_ansi_tsangan",
+        "LAYOUT_60_iso_7u_spc_split_bs_rshift": "LAYOUT_60_iso_tsangan_split_bs_rshift",
+        "LAYOUT_60_ansi_arrow_6u_spc": "LAYOUT_60_ansi_arrow",
+        "LAYOUT_64_ansi_6u_spc": "LAYOUT_64_ansi",
+        "LAYOUT_60_iso_arrow_6u_spc": "LAYOUT_60_iso_arrow",
+        "LAYOUT_64_iso_6u_spc": "LAYOUT_64_iso",
+        "LAYOUT_60_ansi_arrow_6u_spc_split_bs": "LAYOUT_60_ansi_arrow_split_bs",
+        "LAYOUT_64_ansi_6u_spc_split_bs": "LAYOUT_64_ansi_split_bs",
+        "LAYOUT_60_iso_arrow_6u_spc_split_bs": "LAYOUT_60_iso_arrow_split_bs",
+        "LAYOUT_64_iso_6u_spc_split_bs": "LAYOUT_64_iso_split_bs",
+        "LAYOUT_60_iso_1u_lshift_split_bs_rshift": "LAYOUT_60_iso_split_bs_rshift",
+        "LAYOUT_60_iso_1u_lshift_7u_spc_split_bs_rshift": "LAYOUT_60_iso_tsangan_split_bs_rshift"
+    },
     "layouts": {
+        "LAYOUT_all": {
+            "layout": [
+                {"x":0, "y":0},
+                {"x":1, "y":0},
+                {"x":2, "y":0},
+                {"x":3, "y":0},
+                {"x":4, "y":0},
+                {"x":5, "y":0},
+                {"x":6, "y":0},
+                {"x":7, "y":0},
+                {"x":8, "y":0},
+                {"x":9, "y":0},
+                {"x":10, "y":0},
+                {"x":11, "y":0},
+                {"x":12, "y":0},
+                {"x":13, "y":0},
+                {"x":14, "y":0},
+
+                {"x":0, "y":1, "w":1.5},
+                {"x":1.5, "y":1},
+                {"x":2.5, "y":1},
+                {"x":3.5, "y":1},
+                {"x":4.5, "y":1},
+                {"x":5.5, "y":1},
+                {"x":6.5, "y":1},
+                {"x":7.5, "y":1},
+                {"x":8.5, "y":1},
+                {"x":9.5, "y":1},
+                {"x":10.5, "y":1},
+                {"x":11.5, "y":1},
+                {"x":12.5, "y":1},
+                {"x":13.5, "y":1, "w":1.5},
+
+                {"x":0, "y":2, "w":1.75},
+                {"x":1.75, "y":2},
+                {"x":2.75, "y":2},
+                {"x":3.75, "y":2},
+                {"x":4.75, "y":2},
+                {"x":5.75, "y":2},
+                {"x":6.75, "y":2},
+                {"x":7.75, "y":2},
+                {"x":8.75, "y":2},
+                {"x":9.75, "y":2},
+                {"x":10.75, "y":2},
+                {"x":11.75, "y":2},
+                {"x":12.75, "y":2},
+                {"x":13.75, "y":2, "w":1.25},
+
+                {"x":0, "y":3},
+                {"x":1, "y":3},
+                {"x":2, "y":3},
+                {"x":3, "y":3},
+                {"x":4, "y":3},
+                {"x":5, "y":3},
+                {"x":6, "y":3},
+                {"x":7, "y":3},
+                {"x":8, "y":3},
+                {"x":9, "y":3},
+                {"x":10, "y":3},
+                {"x":11, "y":3},
+                {"x":12, "y":3},
+                {"x":13, "y":3},
+                {"x":14, "y":3},
+
+                {"x":0, "y":4, "w":1.25},
+                {"x":1.25, "y":4, "w":1.25},
+                {"x":2.5, "y":4, "w":1.25},
+                {"label":"1.25u Left Mod / 3u Left Spacebar", "x":3.75, "y":4, "w":1.25},
+                {"label":"3u Center/6u/6.25u Spacebar", "x":5, "y":4, "w":2},
+                {"label":"7u Spacebar", "x":7, "y":4},
+                {"label":"3u Right Spacebar", "x":8, "y":4},
+                {"label":"1.25u Right Mod", "x":9, "y":4},
+                {"x":10, "y":4},
+                {"x":11, "y":4},
+                {"x":12, "y":4},
+                {"x":13, "y":4},
+                {"x":14, "y":4}
+            ]
+        },
         "LAYOUT_60_ansi": {
             "layout": [
-                {"x": 0, "y": 0},
-                {"x": 1, "y": 0},
-                {"x": 2, "y": 0},
-                {"x": 3, "y": 0},
-                {"x": 4, "y": 0},
-                {"x": 5, "y": 0},
-                {"x": 6, "y": 0},
-                {"x": 7, "y": 0},
-                {"x": 8, "y": 0},
-                {"x": 9, "y": 0},
-                {"x": 10, "y": 0},
-                {"x": 11, "y": 0},
-                {"x": 12, "y": 0},
-                {"x": 13, "y": 0, "w": 2},
-
-                {"x": 0, "y": 1, "w": 1.5},
-                {"x": 1.5, "y": 1},
-                {"x": 2.5, "y": 1},
-                {"x": 3.5, "y": 1},
-                {"x": 4.5, "y": 1},
-                {"x": 5.5, "y": 1},
-                {"x": 6.5, "y": 1},
-                {"x": 7.5, "y": 1},
-                {"x": 8.5, "y": 1},
-                {"x": 9.5, "y": 1},
-                {"x": 10.5, "y": 1},
-                {"x": 11.5, "y": 1},
-                {"x": 12.5, "y": 1},
-                {"x": 13.5, "y": 1, "w": 1.5},
-
-                {"x": 0, "y": 2, "w": 1.75},
-                {"x": 1.75, "y": 2},
-                {"x": 2.75, "y": 2},
-                {"x": 3.75, "y": 2},
-                {"x": 4.75, "y": 2},
-                {"x": 5.75, "y": 2},
-                {"x": 6.75, "y": 2},
-                {"x": 7.75, "y": 2},
-                {"x": 8.75, "y": 2},
-                {"x": 9.75, "y": 2},
-                {"x": 10.75, "y": 2},
-                {"x": 11.75, "y": 2},
-                {"x": 12.75, "y": 2, "w": 2.25},
-
-                {"x": 0, "y": 3, "w": 2.25},
-                {"x": 2.25, "y": 3},
-                {"x": 3.25, "y": 3},
-                {"x": 4.25, "y": 3},
-                {"x": 5.25, "y": 3},
-                {"x": 6.25, "y": 3},
-                {"x": 7.25, "y": 3},
-                {"x": 8.25, "y": 3},
-                {"x": 9.25, "y": 3},
-                {"x": 10.25, "y": 3},
-                {"x": 11.25, "y": 3},
-                {"x": 12.25, "y": 3, "w": 2.75},
-
-                {"x": 0, "y": 4, "w": 1.25},
-                {"x": 1.25, "y": 4, "w": 1.25},
-                {"x": 2.5, "y": 4, "w": 1.25},
-                {"x": 3.75, "y": 4, "w": 6.25},
-                {"x": 10, "y": 4, "w": 1.25},
-                {"x": 11.25, "y": 4, "w": 1.25},
-                {"x": 12.5, "y": 4, "w": 1.25},
-                {"x": 13.75, "y": 4, "w": 1.25}
-		    ]
-		},
+                {"x":0, "y":0},
+                {"x":1, "y":0},
+                {"x":2, "y":0},
+                {"x":3, "y":0},
+                {"x":4, "y":0},
+                {"x":5, "y":0},
+                {"x":6, "y":0},
+                {"x":7, "y":0},
+                {"x":8, "y":0},
+                {"x":9, "y":0},
+                {"x":10, "y":0},
+                {"x":11, "y":0},
+                {"x":12, "y":0},
+                {"x":13, "y":0, "w":2},
+
+                {"x":0, "y":1, "w":1.5},
+                {"x":1.5, "y":1},
+                {"x":2.5, "y":1},
+                {"x":3.5, "y":1},
+                {"x":4.5, "y":1},
+                {"x":5.5, "y":1},
+                {"x":6.5, "y":1},
+                {"x":7.5, "y":1},
+                {"x":8.5, "y":1},
+                {"x":9.5, "y":1},
+                {"x":10.5, "y":1},
+                {"x":11.5, "y":1},
+                {"x":12.5, "y":1},
+                {"x":13.5, "y":1, "w":1.5},
+
+                {"x":0, "y":2, "w":1.75},
+                {"x":1.75, "y":2},
+                {"x":2.75, "y":2},
+                {"x":3.75, "y":2},
+                {"x":4.75, "y":2},
+                {"x":5.75, "y":2},
+                {"x":6.75, "y":2},
+                {"x":7.75, "y":2},
+                {"x":8.75, "y":2},
+                {"x":9.75, "y":2},
+                {"x":10.75, "y":2},
+                {"x":11.75, "y":2},
+                {"x":12.75, "y":2, "w":2.25},
+
+                {"x":0, "y":3, "w":2.25},
+                {"x":2.25, "y":3},
+                {"x":3.25, "y":3},
+                {"x":4.25, "y":3},
+                {"x":5.25, "y":3},
+                {"x":6.25, "y":3},
+                {"x":7.25, "y":3},
+                {"x":8.25, "y":3},
+                {"x":9.25, "y":3},
+                {"x":10.25, "y":3},
+                {"x":11.25, "y":3},
+                {"x":12.25, "y":3, "w":2.75},
+
+                {"x":0, "y":4, "w":1.25},
+                {"x":1.25, "y":4, "w":1.25},
+                {"x":2.5, "y":4, "w":1.25},
+                {"x":3.75, "y":4, "w":6.25},
+                {"x":10, "y":4, "w":1.25},
+