support the colemak keyboard layout

[soweliniko]

I use a colemak-layout keyboard as my main (and only) keyboard and I would like to use it with scripts like yggdrasil and orca on norns but colemak isn't available as a keyboard layout option. It's not a huge issue to switch to a US qwerty board to use norns software but it would be nice to have colemak support, especially as there is already support for dvorak.

[tehn]

@p3r7 made an extensible keymap system, see https://github.com/monome/norns/tree/main/lua/core/keymap

[p3r7]

all those are converted from qmk keymap conf files using this script: https://github.com/p3r7/norns-kbd-layout-generator

it should just be a matter of calling the script against this file: https://github.com/qmk/qmk_firmware/blob/master/quantum/keymap_extras/keymap_colemak.h

also, i fixed some things in the conversion script but haven’t submitted those to the norns repo. those + colemak support could go in a single PR.