QMK CLI and JSON keymap support (#6176)

* Script to generate keymap.c from JSON file.

* Support for keymap.json

* Add a warning about the keymap.c getting overwritten.

* Fix keymap generating

* Install the python deps

* Flesh out more of the python environment

* Remove defunct json2keymap

* Style everything with yapf

* Polish up python support

* Hide json keymap.c into the .build dir

* Polish up qmk-compile-json

* Make milc work with positional arguments

* Fix a couple small things

* Fix some errors and make the CLI more understandable

* Make the qmk wrapper more robust

* Add basic QMK Doctor

* Clean up docstrings and flesh them out as needed

* remove unused compile_firmware() function

util/msys2_install.sh

@@ -5,6 +5,7 @@ download_dir=~/qmk_utils
 avrtools=avr8-gnu-toolchain
 armtools=gcc-arm-none-eabi
 installflip=false
+util_dir=$(dirname "$0")
 
 echo "Installing dependencies needed for the installation (quazip)"
 pacman --needed -S base-devel mingw-w64-x86_64-toolchain msys/git msys/p7zip msys/python3 msys/unzip
@@ -92,6 +93,8 @@ else
 fi
 popd
 
+pip3 install -r ${util_dir}/../requirements.txt
+
 cp -f "$dir/activate_msys2.sh" "$download_dir/"
 
 if grep "^source ~/qmk_utils/activate_msys2.sh$" ~/.bashrc