add refresh token

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

@@ -5,6 +5,7 @@ import 'user_model.dart';
 class AuthResponseModel extends AuthResponse {
   const AuthResponseModel({
     required super.accessToken,
+    required super.refreshToken,
     required super.user,
   });
 
@@ -12,6 +13,7 @@ class AuthResponseModel extends AuthResponse {
   factory AuthResponseModel.fromJson(Map<String, dynamic> json) {
     return AuthResponseModel(
       accessToken: json['access_token'] as String,
+      refreshToken: json['refresh_token'] as String,
       user: UserModel.fromJson(json['user'] as Map<String, dynamic>),
     );
   }
@@ -20,6 +22,7 @@ class AuthResponseModel extends AuthResponse {
   Map<String, dynamic> toJson() {
     return {
       'access_token': accessToken,
+      'refresh_token': refreshToken,
       'user': (user as UserModel).toJson(),
     };
   }
@@ -28,6 +31,7 @@ class AuthResponseModel extends AuthResponse {
   factory AuthResponseModel.fromEntity(AuthResponse authResponse) {
     return AuthResponseModel(
       accessToken: authResponse.accessToken,
+      refreshToken: authResponse.refreshToken,
       user: authResponse.user,
     );
   }
@@ -36,6 +40,7 @@ class AuthResponseModel extends AuthResponse {
   AuthResponse toEntity() {
     return AuthResponse(
       accessToken: accessToken,
+      refreshToken: refreshToken,
       user: user,
     );
   }