Custom Notification Tones (#5527)

* added foundation for custom notifications

* feat: add localizations for tone names

also, if available, include the pro sound in the element x sound list

* use a static file location to store the notification tone

and update the file at that location when selected

* if there's a problem previewing or setting the alert tone, toast the user with the error

* rename tone directory

* create NotificationToneManager to handle tone business logic

* conform to project formatting

* assign custom sound to actual notifications

* dry up notification generation in the nse

* add compilation condition for including notification alert tone and remove from share extension

* swift format had some opinions

* flatten the notification tone ui, removing system/elementx designations

* fix stored file url breaking due to sandbox path changes

* tone manager can import custom tones and provide a list of imported tones

* ui support for custom tones

* can delete custom imported tones

* sort the custom tones

* add additional preset sounds

* can choose caf files for custom sounds and fix location persistence issues

* store sound locations with relative links

this is a better solution than storing bookmarks since bookmark resolution can be variable and differ from freshly derived urls

* add docs for new notification features

* run tone conversion in background

* resolved several ai found issues

* added protocol and mocks for notification tone manager

* added tests for notification settings screen vm interactions with the tone manager

* add tests for notification tone manager

* rename element tone names per feedback

* move custom tone option to the top of the notification tone list

* rename Tone to Sound for consistency with Android

* remove additional bundled tones

* restore accidentally deleted Element Default sound file

* system alert tones are filtered by what's available on the system prior to finalizing the collection

* Add a couple more caf file conversion log statements

* Simplify the notification sound conversion logic

* Update notification sound strings in sync with Android

* update xcodeproj after rebase

* remove conditional compilation and include NotificationAlertSound in share extension

* Use AudioPlayer instead of custom tone previewer and remove the previewer

* rename NotificationTone

* Consolidate and move errors to top of NotificationToneManager

* tone manager no longer depends on userinterfacecontroller

* Move static Tone properties to NotificationToneManager

* resolve view model initializer feedback

* update xcodeproj

* fatalerror when tone manager cannot init

* Remove banner icon on alert tone error

* fixup review feedback

* Moved URL handling to NotificationToneManager

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

@@ -29,6 +29,8 @@ struct NotificationSettingsScreenViewState: BindableState {
 
     var settings: NotificationSettingsScreenSettings?
     var applyingChange = false
+    var selectedAlertTone: NotificationTone
+    var availableCustomTones: [NotificationTone]
 }
 
 struct NotificationSettingsScreenViewStateBindings {
@@ -37,6 +39,8 @@ struct NotificationSettingsScreenViewStateBindings {
     var callsEnabled = false
     var invitationsEnabled = false
     var alertInfo: AlertInfo<NotificationSettingsScreenErrorType>?
+    var shouldShowAlertSounds = false
+    var shouldShowCustomAlertTonePicker = false
 }
 
 struct NotificationSettingsScreenSettings {
@@ -89,6 +93,9 @@ enum NotificationSettingsScreenViewAction {
     case invitationsChanged
     case close
     case fixConfigurationMismatchTapped
+    case selectAlertTone(NotificationTone)
+    case addedCustomAlertTone(Result<URL, Error>)
+    case deleteCustomAlertTones([NotificationTone])
 }
 
 enum NotificationSettingsScreenErrorType: Hashable {