Feature request: transform LUX scale to become linear with humane perception for auto brightness feature

[Kugelfang666]

I just try to get the auto brightness feature up and running in a meaningful way, however I struggle to fine-tune the upper and lower limits in lux. My understanding is that LUX scales on a logarithmic scale and hence its super hard too find a meaningful interval in which the brightness of the PixelIT can be interpolated.

My proposal would be to stick with exposing the raw data via MQTT but transform the raw lux value as described in this Microsoft article for the auto brightness logic in the GUI

https://docs.microsoft.com/en-us/windows/win32/sensorsapi/understanding-and-interpreting-lux-values