Threaded notifications (#4644)

* implemented grouping

* implemented presenting the thread

* improved the implementation by reusing the presentation action

* add Thread group to DMs to differentiate from non threaded messages of the same DM

* name for a threaded notification in group room

* focus event when tapping on a notification

* pr suggestions

* document

ElementX/Sources/Application/AppCoordinator.swift

@@ -359,9 +359,14 @@ class AppCoordinator: AppCoordinatorProtocol, AuthenticationFlowCoordinatorDeleg
             } else {
                 storedRoomsToAwait = [roomID]
             }
+            handleAppRoute(.room(roomID: roomID, via: []))
+        } else if appSettings.threadsEnabled, let threadRootEventID = content.threadRootEventID {
+            handleAppRoute(.thread(roomID: roomID, threadRootEventID: threadRootEventID, focusEventID: content.eventID))
+        } else if let eventID = content.eventID {
+            handleAppRoute(.event(eventID: eventID, roomID: roomID, via: []))
+        } else {
+            handleAppRoute(.room(roomID: roomID, via: []))
         }
-        
-        handleAppRoute(.room(roomID: roomID, via: []))
     }
     
     func handleInlineReply(_ service: NotificationManagerProtocol, content: UNNotificationContent, replyText: String) async {

ElementX/Sources/Application/Navigation/AppRoutes.swift

@@ -51,6 +51,8 @@ enum AppRoute: Hashable {
     case share(ShareExtensionPayload)
     /// The change roles screen of a room with the transfer ownership setting
     case transferOwnership(roomID: String)
+    /// A thread within a room, only to be used to handle tap on notification for threaded events.
+    case thread(roomID: String, threadRootEventID: String, focusEventID: String?)
     
     /// Whether or not the route should be handled by the authentication flow.
     var isAuthenticationRoute: Bool {