Frontend first draft

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

@@ -0,0 +1,15 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'file_uploaded.g.dart';
+
+
+@JsonSerializable()
+class FileUploaded {
+
+  final String url;
+
+  const FileUploaded({ required this.url });
+
+  factory FileUploaded.fromJson(Map<String, dynamic> json) => _$FileUploadedFromJson(json);
+  Map<String, dynamic> toJson() => _$FileUploadedToJson(this);
+}