Add a new submodule as an alternative to Backlight Registers Fix (BLR), fixing the 3-minute dark screen issue and making Backlight Smoother (BLS) work on mobile Coffee Lake platforms running macOS 13.4 or later

Add a new submodule as an alternative to Backlight Registers Fix (BLR), fixing the 3-minute dark screen issue and making Backlight Smoother (BLS) work on mobile Coffee Lake platforms running macOS 13.4 or later #363