Frontend first draft

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

@@ -0,0 +1,15 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'token.g.dart';
+
+
+@JsonSerializable()
+class TokenData {
+  final String token;
+  final DateTime expiration;
+
+  const TokenData({required this.token, required this.expiration});
+
+  factory TokenData.fromJson(Map<String, dynamic> json) => _$TokenDataFromJson(json);
+  Map<String, dynamic> toJson() => _$TokenDataToJson(this);
+}