SwiftUI NavigationController and UserNotificationControllers (#309)

* Fixes #286 - Adopted the new SwiftUI NavigationStack based NavigationController throughout the application
* Fixes #315 - Implemented new user notification components on top of SwiftUI and the new navigation flows
* Add home screen fade animation between skeletons and real rooms
* Bump the danger-swift version used on the CI and swiftlint with it
* Renamed Splash to Onboarding, Empty to Splash

ElementX/Sources/Screens/HomeScreen/HomeScreenViewModel.swift

@@ -111,6 +111,10 @@ class HomeScreenViewModel: HomeScreenViewModelType, HomeScreenViewModelProtocol
         }
     }
     
+    func presentAlert(_ alertInfo: AlertInfo<UUID>) {
+        state.bindings.alertInfo = alertInfo
+    }
+    
     // MARK: - Private
     
     private func loadDataForRoomIdentifier(_ identifier: String) {