update example project

example/lib/example_viewport.dart

@@ -1,26 +1,36 @@
 import 'package:flutter/widgets.dart';
+import 'package:flutter_filament/entities/entity_transform_controller.dart';
 import 'package:flutter_filament/filament_controller.dart';
+import 'package:flutter_filament/widgets/entity_controller_mouse_widget.dart';
 import 'package:flutter_filament/widgets/filament_gesture_detector.dart';
 import 'package:flutter_filament/widgets/filament_widget.dart';
 
 class ExampleViewport extends StatelessWidget {
   final FilamentController? controller;
+  final EntityTransformController? entityTransformController;
   final EdgeInsets padding;
+  final FocusNode keyboardFocusNode;
 
   const ExampleViewport(
-      {super.key, required this.controller, required this.padding});
+      {super.key,
+      required this.controller,
+      required this.padding,
+      required this.keyboardFocusNode,
+      this.entityTransformController});
 
   @override
   Widget build(BuildContext context) {
     return controller != null
         ? Padding(
             padding: padding,
-            child: FilamentGestureDetector(
-                showControlOverlay: true,
-                controller: controller!,
-                child: FilamentWidget(
-                  controller: controller!,
-                )))
+            child: EntityTransformMouseControllerWidget(
+                transformController: entityTransformController,
+                child: FilamentGestureDetector(
+                    showControlOverlay: true,
+                    controller: controller!,
+                    child: FilamentWidget(
+                      controller: controller!,
+                    ))))
         : Container();
   }
 }