Implemented structure for push Notifications

lib/storage/notification/notificationSettings.dart

@@ -0,0 +1,14 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'notificationSettings.g.dart';
+
+@JsonSerializable()
+class NotificationSettings {
+  bool askUsageDismissed;
+  bool enabled;
+
+  NotificationSettings({required this.askUsageDismissed, required this.enabled});
+
+  factory NotificationSettings.fromJson(Map<String, dynamic> json) => _$NotificationSettingsFromJson(json);
+  Map<String, dynamic> toJson() => _$NotificationSettingsToJson(this);
+}