feat: add configurable backup on charging only and delay settings for android (#22114)

* feat: add configurable on charging only and delay

* Segmented and style the settings

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/pigeon/background_worker_api.dart

@@ -11,10 +11,19 @@ import 'package:pigeon/pigeon.dart';
     dartPackageName: 'immich_mobile',
   ),
 )
+class BackgroundWorkerSettings {
+  final bool requiresCharging;
+  final int minimumDelaySeconds;
+
+  const BackgroundWorkerSettings({required this.requiresCharging, required this.minimumDelaySeconds});
+}
+
 @HostApi()
 abstract class BackgroundWorkerFgHostApi {
   void enable();
 
+  void configure(BackgroundWorkerSettings settings);
+
   void disable();
 }