ZMK config and layout for the graz-kb.

Building

1. Go into zmk/ directory
2. Activate the venv source ./.venv/bin/activate
3. cd app
4. Run

west build -p -b rpi_pico -- -DSHIELD="grazkb" -DZMK_EXTRA_MODULES=/Users/graziano/code/zmk-config-grazkb/