Fixes #978 - Message forwarding support

* Add support for message forwarding

* Move the TimelineProvider within the RoomProxy to avoid it going out of sync and have it automatically register for timeline updates on init

* Implement single selection form button style for message forwarding

* Add searching and filter out the source room from the list

* Fixed emoji screen initial search bar height

* Add view models tests

* Add changelog

* Update strings

* Tweaks following code review

UnitTests/Sources/RoomFlowCoordinatorTests.swift

@@ -38,7 +38,8 @@ class RoomFlowCoordinatorTests: XCTestCase {
                                                   roomTimelineControllerFactory: MockRoomTimelineControllerFactory(),
                                                   navigationStackCoordinator: navigationStackCoordinator,
                                                   navigationSplitCoordinator: navigationSplitCoordinator,
-                                                  emojiProvider: EmojiProvider())
+                                                  emojiProvider: EmojiProvider(),
+                                                  userIndicatorController: ServiceLocator.shared.userIndicatorController)
     }
     
     func testRoomPresentation() async {