core: channel messages (#6604)

* core: channel messages (WIP)

* do not include member ID when quoting channel messages

* query plans

* reduce duplication

* refactor

* refactor plan

* refactor 2

* all tests

* remove plan

* refactor 3

* refactor 4

* refactor 5

* refactor 6

* plans

* plans to imrove test coverage and fix bugs

* update plan

* update plan

* bug fixes (wip)

* new plan

* fixes wip

* more tests

* comment, fix lint

* restore comment

* restore comments

* rename param

* move type

* simplify

* comment

* fix stale state

* refactor

* less diff

* simplify

* less diff

* refactor

---------

Co-authored-by: Evgeny @ SimpleX Chat <259188159+evgeny-simplex@users.noreply.github.com>
Co-authored-by: spaced4ndy <8711996+spaced4ndy@users.noreply.github.com>

bots/api/TYPES.md

@@ -606,6 +606,9 @@ GroupRcv:
 - type: "groupRcv"
 - groupMember: [GroupMember](#groupmember)
 
+ChannelRcv:
+- type: "channelRcv"
+
 LocalSnd:
 - type: "localSnd"