#8 Added marker to indicate read status in talk chats

lib/api/marianumcloud/talk/setReadMarker/setReadMarker.dart

@@ -5,7 +5,7 @@ import 'package:http/http.dart';
 import '../talkApi.dart';
 import 'setReadMarkerParams.dart';
 
-class SetReadMarker extends TalkApi<void> {
+class SetReadMarker extends TalkApi {
   String chatToken;
   bool readState;
   SetReadMarkerParams? setReadMarkerParams;
@@ -16,7 +16,7 @@ class SetReadMarker extends TalkApi<void> {
 
   @override
   assemble(String raw) {
-
+    return null;
   }
 
   @override