Configuration system for CLI (#6708)

* Rework how bin/qmk handles subcommands

* qmk config wip

* Code to show all configs

* Fully working `qmk config` command

* Mark some CLI arguments so they don't pollute the config file

* Fleshed out config support, nicer subcommand support

* sync with installable cli

* pyformat

* Add a test for subcommand_modules

* Documentation for the `qmk config` command

* split config_token on space so qmk config is more predictable

* Rework how subcommands are imported

* Document `arg_only`

* Document deleting from CLI

* Document how multiple operations work

* Add cli config to the doc index

* Add tests for the cli commands

* Make running the tests more reliable

* Be more selective about building all default keymaps

* Update new-keymap to fit the new subcommand style

* Add documentation about writing CLI scripts

* Document new-keyboard

* Update docs/cli_configuration.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update docs/cli_development.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update docs/cli_development.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Update docs/cli_development.md

Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>

* Address yan's comments.

* Apply suggestions from code review

suggestions from @noahfrederick

Co-Authored-By: Noah Frederick <code@noahfrederick.com>

* Apply suggestions from code review

Co-Authored-By: Noah Frederick <code@noahfrederick.com>

* Remove pip3 from the test runner

lib/python/qmk/cli/new/__init__.py

@@ -0,0 +1 @@
+from . import keymap