TF-606 Implement refresh token when access token expired

lib/features/login/data/extensions/token_response_extension.dart

@@ -0,0 +1,14 @@
+
+import 'package:flutter_appauth/flutter_appauth.dart';
+import 'package:model/model.dart';
+
+extension TokenResponseExtension on TokenResponse {
+
+  TokenOIDC toTokenOIDC() {
+    return TokenOIDC(
+      accessToken ?? '',
+      TokenId(idToken ?? ''),
+      refreshToken ?? '',
+      expiredTime: accessTokenExpirationDateTime ?? DateTime.now());
+  }
+}