Add backlight dimming after timeout#17

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DJFliX wants to merge 2 commits intosolderparty:mainfrom

DJFliX:add-backlight-dimming

Commits on Jul 3, 2022

Dim and undim backlight
DJFliX
committed

Commits on Jul 10, 2022

move backlight variable declarations from header to c file
DJFliX
committed