Screen brightness

[sapristi]

Hello, would it be possible to add support for screen brightness keys ?
It seems to me that they are part of standard media keys. They are at least supported by QMK (see KC_BRIGHTNESS_UP at https://docs.qmk.fm/#/keycodes_basic ).

I can't seem to find which keycodes would be associated with these keys (I have tried xev and showkey, but haven't found anything consistent with those in https://github.com/kairyu/tkg/blob/master/js/keycode_map.js )