* feat: Add seen/unseen activity center state
* feat: ActivityCenterState for grouping ActivityCenter unread messages cnt and seen state
* feat: always use messenger's addActivityCenterNotification & add state to the response
* Remove unused activity center endpoints form api and fix test
* feat(ActivityCenter): Add community request AC notification
* feat(ActivityCenter): Add CommunityID to AC notification
* feat(ActivityCenter): Add membership status for community membership AC notifications
* feat(ActivityCenter): Add tests for community notifications and fix naming
* Add notification for kicked from community action
* feat(ActivityCenter): Fix for missing notification objects for tests