Is it possible to rotate the skybox?

Hi!

@LfxPaul @mwestphal
I’ve tried using this feature in 5.8.1, 5.9.0, 5.9.1 and in 5.10.0-RC1 (all on Windows).
In 5.8.1, 5.9.0, 5.9.1 it’s just absent. I’ve tried assigning skybox rotation it to CTRL+LeftClick in Edit->Settings->Camera. The option “SkyboxRotate” is absent in dropdown lists.

In 5.10.0-RC1 it’s present in settings, but it doesn’t seem to work properly. When I hold CTRL+LeftClick, the skybox seems to move only about Y axis (while in my case I need rotation around X)