Frontend first draft

frontend/pshared/lib/api/responses/message.dart

@@ -0,0 +1,19 @@
+import 'package:json_annotation/json_annotation.dart';
+
+import 'package:pshared/api/responses/type.dart';
+
+part 'message.g.dart';
+
+
+@JsonSerializable(explicitToJson: true)
+class HTTPMessage {
+
+  @JsonKey(fromJson: MessageTypeExtension.fromJson, toJson: MessageTypeExtension.toJson)
+  final MessageType status;
+  final Map<String, dynamic> data;
+
+  const HTTPMessage({ required this.data, required this.status });
+
+  factory HTTPMessage.fromJson(Map<String, dynamic> json) => _$HTTPMessageFromJson(json);
+  Map<String, dynamic> toJson() => _$HTTPMessageToJson(this);
+}