[CLI] Add c2json (#8817)

* Basic keymap parsing finally works

* Add 'keymap.json' creation to the qmk.keymap module

* Add tests and fix formatting

* Fix/exclude flake8 errors

* Convert keymap.c to valid keymap.json

* Fix some errors

* Add tests

* Finalize keymap.json creation, add json template

* Add docs

* Move pygments to the standard requirements

* Add support for nameless layers, fix tests

* Fix things after rebase

* Add missing 'keymap' value.

* Fix missing layer numbers from advanced keycodes

Buckwich noticed that if the advanced keycode / layer toggling key
contains a number, it goes missing.
Now we properly handle them.
Thx for noticing!

* Apply suggestions from code review

* fixup tests

Co-authored-by: Zach White <skullydazed@drpepper.org>
Co-authored-by: skullY <skullydazed@gmail.com>

lib/python/qmk/commands.py

@@ -7,7 +7,6 @@ import subprocess
 import shlex
 import shutil
 
-from milc import cli
 import qmk.keymap
 
 
@@ -84,6 +83,4 @@ def run(command, *args, **kwargs):
         safecmd = ' '.join(safecmd)
         command = [os.environ['SHELL'], '-c', safecmd]
 
-    cli.log.debug('Running command: %s', command)
-
     return subprocess.run(command, *args, **kwargs)