added talk notification levels for chats

lib/api/marianumcloud/talk/actions/talk_actions.dart

@@ -4,6 +4,7 @@ import 'package:http/http.dart' as http;
 
 import '../../../api_params.dart';
 import '../../../api_response.dart';
+import '../room/get_room_response.dart';
 import '../talk_api.dart';
 
 /// Small POST/DELETE-only Talk endpoints that have no response payload.
@@ -105,3 +106,21 @@ class DeleteRoomAvatar extends TalkApi {
     Map<String, String>? headers,
   ) => http.delete(uri, headers: headers);
 }
+
+class SetNotificationLevel extends TalkApi {
+  final String chatToken;
+  final GetRoomResponseObjectParticipantNotificationLevel level;
+
+  SetNotificationLevel(this.chatToken, this.level)
+    : super('v4/room/$chatToken/notify', null);
+
+  @override
+  ApiResponse? assemble(String raw) => null;
+
+  @override
+  Future<http.Response> request(
+    Uri uri,
+    ApiParams? body,
+    Map<String, String>? headers,
+  ) => http.post(uri, headers: headers, body: {'level': '${level.apiValue}'});
+}