Document the interface itself and all of its 60+ properties and functions.
Notable behaviours taken from RustMatrixClient that callers cannot guess from
the signatures: getRoom and getJoinedRoom build a new closeable instance on
every call, createRoom/joinRoom/knockRoom wait for the membership to come back
through sync and report a null RoomInfo rather than a failure when that wait
times out, getCacheSize excludes the crypto database, and clearCache destroys
the client while keeping the session.
Also fix the stale wording and the malformed KDoc block on resolveRoomAlias,
and add the missing @param entries on the functions that already had a summary.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Benoit Marty
5d6384e175