added talk notification levels for chats

lib/state/app/modules/chat_list/bloc/chat_list_bloc.dart

@@ -3,6 +3,7 @@ import 'dart:developer';
 
 import 'package:flutter_app_badge/flutter_app_badge.dart';
 
+import '../../../../../api/marianumcloud/talk/actions/talk_actions.dart';
 import '../../../../../api/marianumcloud/talk/chat/get_chat_response.dart';
 import '../../../../../api/marianumcloud/talk/room/get_room_response.dart';
 import '../../../infrastructure/utility_widgets/loadable_hydrated_bloc/loadable_hydrated_bloc.dart';
@@ -126,6 +127,18 @@ class ChatListBloc
     });
   }
 
+  Future<void> setNotificationLevel(
+    String token,
+    GetRoomResponseObjectParticipantNotificationLevel level,
+  ) async {
+    await SetNotificationLevel(token, level).run();
+    _mutateRoom(token, (r) {
+      if (r.notificationLevel == level) return false;
+      r.notificationLevel = level;
+      return true;
+    });
+  }
+
   /// Clears unread too — long-poll only feeds this in for an actively-open chat.
   void applyIncomingMessage(String token, GetChatResponseObject message) {
     _mutateRoom(token, (r) {