refactor: Rooms model 1/2 (#28694)

apps/meteor/app/apps/server/bridges/rooms.ts

...eor/app/channel-settings/server/functions/saveRoomName.js

...meteor/app/importer/server/classes/ImportDataConverter.ts

...eor/app/irc/server/irc-bridge/peerHandlers/sentMessage.js

...teor/app/lib/server/functions/addUserToDefaultChannels.ts

apps/meteor/app/lib/server/functions/createDirectRoom.ts

apps/meteor/app/lib/server/functions/createRoom.ts

apps/meteor/app/lib/server/functions/insertMessage.js

apps/meteor/app/lib/server/lib/notifyUsersOnMessage.js

apps/meteor/app/livechat/server/lib/RoutingManager.js

apps/meteor/app/models/server/models/Messages.js

apps/meteor/app/models/server/models/Rooms.js

apps/meteor/app/slackbridge/server/RocketAdapter.js

apps/meteor/app/slackbridge/server/SlackAdapter.js

apps/meteor/app/utils/server/lib/getValidRoomName.js

apps/meteor/ee/server/lib/audit/methods.ts

apps/meteor/ee/server/lib/ldap/Manager.ts

apps/meteor/ee/server/lib/oauth/Manager.ts

apps/meteor/server/methods/createDirectMessage.ts

apps/meteor/server/models/raw/Rooms.js