flutter: Also create bindings for ViewFactory

src/flutter/dart/lib/ViewFactory_flutter.dart

@@ -0,0 +1,19 @@
+/*
+  This file is part of KDDockWidgets.
+
+  SPDX-FileCopyrightText: 2019-2022 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
+  Author: Sérgio Martins <sergio.martins@kdab.com>
+
+  SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only
+
+  Contact KDAB at <info@kdab.com> for commercial licensing options.
+*/
+
+import 'package:KDDockWidgetsBindings/src/ViewFactory_flutter.dart'
+    as KDDockWidgetBindings;
+
+class ViewFactory_flutter extends KDDockWidgetBindings.ViewFactory_flutter {
+ViewFactory_flutter() {
+  print("Dart: Created ViewFactory_flutter");
+}
+}