Property to rotate content shown in VncItem

If the application runs on a device where the screen is in different orientation and the Qt Quick scene is rotated to match that, then VncItem shares rotated scene to VNC clients which is not ideal.

There does not seem to be any way to undo this rotation, except when using GrabItemIsolated it shares its children while ignoring any transformation the VncItem itself was subject to.

Perhaps there could be something like contentRotation that could be used to rotate the content and thus undo the main rotation.