Use the new preview screen when tapping media on the room and pinned events screens. (#3736)

* Use the new TimelineMediaPreview modifier on the room and pinned timeline screens.

* Use the same presentation logic for all timeline media previews.

* Fix a bug with the detection of the timeline end.

* Send pagination requests from the media preview screen.

* Add SwiftLint to the Danger workflow (it is no longer installed on the runner).

* Put SwiftLint back on all of the GitHub runners too.

* Set the function_parameter_count lint rule to 10.

* Make sure to clean-up any previews when the coordinator is done.

* Handle the viewInRoomTimeline action more appropriately.

ElementX/Sources/Services/Timeline/TimelineController/TimelineControllerProtocol.swift

@@ -16,7 +16,14 @@ enum TimelineControllerCallback {
 }
 
 enum TimelineControllerAction {
-    case displayMediaFile(file: MediaFileHandleProxy, title: String?)
+    enum TimelineViewModelKind {
+        /// Use the active timeline view model.
+        case active
+        /// Use the newly generated view model provided.
+        case new(TimelineViewModel)
+    }
+    
+    case displayMediaPreview(item: EventBasedMessageTimelineItemProtocol, timelineViewModel: TimelineViewModelKind)
     case displayLocation(body: String, geoURI: GeoURI, description: String?)
     case none
 }