FR: Screensaver brightness as light

[kreene1987]

I use Adaptive Lighting integration with the screen brightness being lowered in the evening. When the screensaver goes on, the brightness goes to the screensaver brightness (255) which sets manual control and overrides the brightness lowering.

If screensaver brightness was implemented as a light entity as well, they could both be transitioned lower through the evening/morning.

[kreene1987]

I have used a template light to work for now, so only a feature request.