TF-297 Store language selected when user changed

lib/features/manage_account/domain/state/save_language_app_state.dart

@@ -0,0 +1,26 @@
+import 'package:core/core.dart';
+
+class SavingLanguageApp extends UIState {
+
+  SavingLanguageApp();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class SaveLanguageAppSuccess extends UIState {
+
+  SaveLanguageAppSuccess();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class SaveLanguageAppFailure extends FeatureFailure {
+  final dynamic exception;
+
+  SaveLanguageAppFailure(this.exception);
+
+  @override
+  List<Object> get props => [exception];
+}