Made chat messages deletable

lib/api/marianumcloud/talk/deleteMessage/deleteMessage.dart

@@ -0,0 +1,22 @@
+import 'package:http/http.dart' as http;
+import 'package:http/http.dart';
+
+import '../../../apiParams.dart';
+import '../talkApi.dart';
+
+class DeleteMessage extends TalkApi {
+  String chatToken;
+  int messageId;
+  DeleteMessage(this.chatToken, this.messageId) : super("v1/chat/$chatToken/$messageId", null);
+
+  @override
+  assemble(String raw) {
+
+  }
+
+  @override
+  Future<Response>? request(Uri uri, ApiParams? body, Map<String, String>? headers) {
+    return http.delete(uri, headers: headers);
+  }
+
+}