feat: opt-in sync of deletes and restores from web to Android (#16732)

* Features: Local file movement to trash and restoration back to the album added. (Android)

* Comments fixes

* settings button marked as [EXPERIMENTAL]

* _moveToTrashMatchedAssets refactored, moveToTrash renamed.

* fix: bad merge

* Permission check and request for local storage added.

* Permission request added on settings switcher

* Settings button logic changed

* Method channel file_trash moved to BackgroundServicePlugin

---------

Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/lib/services/app_settings.service.dart

@@ -61,6 +61,7 @@ enum AppSettingsEnum<T> {
     0,
   ),
   advancedTroubleshooting<bool>(StoreKey.advancedTroubleshooting, null, false),
+  manageLocalMediaAndroid<bool>(StoreKey.manageLocalMediaAndroid, null, false),
   logLevel<int>(StoreKey.logLevel, null, 5), // Level.INFO = 5
   preferRemoteImage<bool>(StoreKey.preferRemoteImage, null, false),
   loopVideo<bool>(StoreKey.loopVideo, "loopVideo", true),