TF-1808: Add StoreOpenedEmailToCacheInteractor to store email when opened

(cherry picked from commit 45a59e33358caba1d5e191f8c4f9b2a0ecee9342)

lib/features/email/domain/state/store_opened_email_to_cache_state.dart

@@ -0,0 +1,13 @@
+import 'package:core/core.dart';
+
+class StoreOpenedEmailToCacheLoading extends UIState {}
+
+class StoreOpenedEmailToCacheSuccess extends UIState {}
+
+class StoreOpenedEmailToCacheFailure extends FeatureFailure {
+
+  StoreOpenedEmailToCacheFailure(dynamic exception) : super(exception: exception);
+
+  @override
+  List<Object?> get props => [exception];
+}