add links messages

Introduce two new wire messages, LINKS and LINKS_REPLY (swarm::links).
A member answers with its links: for each peer, the transport, whether
it’s relayed, the RTT, and whether it’s dormant.  It answers members
only, at most every 5 s.  This bumps wire::VERSION to 7.  Every build
answers, with or without the feature, so every node needs this patch
before the map shows anything beyond its own node.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/swarm/mod.rs b/src/swarm/mod.rs
index d424529..7fb8e16 100644
--- a/src/swarm/mod.rs
+++ b/src/swarm/mod.rs
@@ -4,6 +4,7 @@
 pub(crate) mod auth;
 pub(crate) mod blob;
 pub(crate) mod bootstrap;
+pub(crate) mod links;
 pub(crate) mod members;
 pub(crate) mod pair;
 pub(crate) mod peer;