Top level deeplink handling (#1660)

* Handle link opening on the top most levels and prepare for percolating them throughout the app
* Add support for a custom app scheme
* Add specific AppRoute parsers.
* Integrate custom scheme in the AppRouteURLParser
* Switch to `element://call` and cleanup route parsing

ElementX/Sources/Screens/Settings/NotificationSettingsScreen/NotificationSettingsScreenModels.swift

@@ -86,7 +86,6 @@ struct NotificationSettingsScreenStrings {
 }
 
 enum NotificationSettingsScreenViewAction {
-    case linkClicked(url: URL)
     case changedEnableNotifications
     case groupChatsTapped
     case directChatsTapped

ElementX/Sources/Screens/Settings/NotificationSettingsScreen/NotificationSettingsScreenViewModel.swift

@@ -57,8 +57,6 @@ class NotificationSettingsScreenViewModel: NotificationSettingsScreenViewModelTy
     
     override func process(viewAction: NotificationSettingsScreenViewAction) {
         switch viewAction {
-        case .linkClicked(let url):
-            MXLog.warning("Link clicked: \(url)")
         case .changedEnableNotifications:
             toggleNotifications()
         case .groupChatsTapped:

ElementX/Sources/Screens/Settings/NotificationSettingsScreen/View/NotificationSettingsScreen.swift

@@ -79,10 +79,6 @@ struct NotificationSettingsScreen: View {
                 }
                 .padding(.horizontal, ListRowPadding.horizontal)
                 .padding(.vertical, 8)
-                .environment(\.openURL, OpenURLAction { url in
-                    context.send(viewAction: .linkClicked(url: url))
-                    return .systemAction
-                })
             })
         }
     }