feat: Implement initial authentication, multi-environment support, and core app infrastructure.

lib/features/auth/data/models/auth_response.dart

@@ -0,0 +1,17 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:real_estate_mobile/features/auth/data/models/user_model.dart';
+
+part 'auth_response.freezed.dart';
+part 'auth_response.g.dart';
+
+@freezed
+abstract class AuthResponse with _$AuthResponse {
+  const factory AuthResponse({
+    required UserModel user,
+    required String accessToken,
+    required String refreshToken,
+  }) = _AuthResponse;
+
+  factory AuthResponse.fromJson(Map<String, dynamic> json) =>
+      _$AuthResponseFromJson(json);
+}