Add sysutils/py-qmk

A program to help users work with QMK keyboard firmware.

Features:

• Interact with your qmk_firmware tree from any location
• Use qmk clone to pull down anyone's qmk_firmware fork
• Setup your build environment with qmk setup
• Check that your environment is correctly setup with qmk doctor

WWW: https://github.com/qmk/qmk_cli