Actually good auto brightness

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Sets the brightness automatically, arguably better than the built-in one.

You can configure the slope, down and offset of the graph that determines the brightness. You can use Desmos to help determine these numbers.
https://www.desmos.com/calculator/aujic0g0nk

The threshold variable is how much the light level can deviate from the average level before the brightness is changed.

The max average variable is how many samples the average will take. More will make it less sensitive to small changes.