feat(mobile): Adds onboarding for permissions (#1865)

* adds onboarding

* fixed error where login was taking you to permission page

* fixed a bad rebase and added more checks to not start backup service on login if no gallery permission

* forgot the permission handler import in AppDelegate

* reverts album selection page

* change to ref watch

* added device_info_plus to podspec

* removed unused import

---------

Co-authored-by: Marty Fuhry <marty@fuhry.farm>

mobile/lib/modules/settings/providers/notification_permission.provider.dart

@@ -0,0 +1,44 @@
+import 'dart:io';
+
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:permission_handler/permission_handler.dart';
+
+class NotificationPermissionNotifier extends StateNotifier<PermissionStatus> {
+  NotificationPermissionNotifier() :
+    super(Platform.isAndroid
+      ? PermissionStatus.granted
+      : PermissionStatus.restricted,
+    ) {
+    // Sets the initial state
+    getNotificationPermission().then((p) => state = p);
+  }
+
+  /// Requests the notification permission
+  /// Note: In Android, this is always granted
+  Future<PermissionStatus> requestNotificationPermission() async {
+     final permission = await Permission.notification.request();
+     state = permission;
+     return permission;
+  }
+
+  /// Whether the user has the permission or not
+  /// Note: In Android, this is always true
+  Future<bool> hasNotificationPermission() {
+    return Permission.notification.isGranted;
+  }
+
+  Future<PermissionStatus> getNotificationPermission() async {
+    final status = await Permission.notification.status;
+    state = status;
+    return status;
+  }
+
+  /// Either the permission was granted already or else ask for the permission
+  Future<bool> hasOrAskForNotificationPermission() {
+    return requestNotificationPermission().then((p) => p.isGranted);
+  }
+
+}
+final notificationPermissionProvider
+  = StateNotifierProvider<NotificationPermissionNotifier, PermissionStatus>
+    ((ref) => NotificationPermissionNotifier());