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/Screens/RoomScreen/RoomScreenViewModel.swift

@@ -115,6 +115,11 @@ class RoomScreenViewModel: RoomScreenViewModelType, RoomScreenViewModelProtocol
         }
     }
     
+    func stop() {
+        // Work around QLPreviewController dismissal issues, see the InteractiveQuickLookModifier.
+        state.bindings.mediaPreviewViewModel = nil
+    }
+    
     func timelineHasScrolled(direction: ScrollDirection) {
         state.lastScrollDirection = direction
     }
@@ -123,6 +128,20 @@ class RoomScreenViewModel: RoomScreenViewModelType, RoomScreenViewModelProtocol
         state.pinnedEventsBannerState.setSelectedPinnedEventID(eventID)
     }
     
+    func displayMediaPreview(_ mediaPreviewViewModel: TimelineMediaPreviewViewModel) {
+        mediaPreviewViewModel.actions.sink { [weak self] action in
+            switch action {
+            case .viewInRoomTimeline:
+                fatalError("viewInRoomTimeline should not be visible on a room preview.")
+            case .dismiss:
+                self?.state.bindings.mediaPreviewViewModel = nil
+            }
+        }
+        .store(in: &cancellables)
+        
+        state.bindings.mediaPreviewViewModel = mediaPreviewViewModel
+    }
+    
     // MARK: - Private
     
     private func setupSubscriptions(ongoingCallRoomIDPublisher: CurrentValuePublisher<String?, Never>) {