core: api to forward messages (#3968)

* wip

* wip

* test

* mute

* tests

* simplify (only bool flag)

* re-encrypt file

* tests

* more tests (wip)

* fix relative paths, refactor

* more tests

* more locks

* fix, tests

* more tests

* rework (revert from bool to ids)

* update schema

* more tests

* add to info

* ForwardedMsg container

* Revert "ForwardedMsg container"

This reverts commit bb57f12151.

* parser

* more tests

* rework api

* more locks

* test

* move

* remove from

* view

* prohibit editing

* item info view

---------

Co-authored-by: spaced4ndy <8711996+spaced4ndy@users.noreply.github.com>

simplex-chat.cabal

@@ -140,6 +140,7 @@ library
       Simplex.Chat.Migrations.M20240228_pq
       Simplex.Chat.Migrations.M20240313_drop_agent_ack_cmd_id
       Simplex.Chat.Migrations.M20240324_custom_data
+      Simplex.Chat.Migrations.M20240402_item_forwarded
       Simplex.Chat.Mobile
       Simplex.Chat.Mobile.File
       Simplex.Chat.Mobile.Shared
@@ -575,6 +576,7 @@ test-suite simplex-chat-test
       ChatTests.ChatList
       ChatTests.Direct
       ChatTests.Files
+      ChatTests.Forward
       ChatTests.Groups
       ChatTests.Local
       ChatTests.Profiles