added option to react to messages

lib/api/marianumcloud/talk/sendMessage/sendMessageParams.dart

@@ -7,7 +7,7 @@ part 'sendMessageParams.g.dart';
 @JsonSerializable(explicitToJson: true, includeIfNull: false)
 class SendMessageParams extends ApiParams {
   String message;
-  int? replyTo;
+  String? replyTo;
 
   SendMessageParams(this.message, {this.replyTo});
 

lib/api/marianumcloud/talk/sendMessage/sendMessageParams.g.dart

@@ -9,7 +9,7 @@ part of 'sendMessageParams.dart';
 SendMessageParams _$SendMessageParamsFromJson(Map<String, dynamic> json) =>
     SendMessageParams(
       json['message'] as String,
-      replyTo: json['replyTo'] as int?,
+      replyTo: json['replyTo'] as String?,
     );
 
 Map<String, dynamic> _$SendMessageParamsToJson(SendMessageParams instance) {