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 <[email protected]>

* Update docs/cli_development.md

Co-Authored-By: noroadsleft <[email protected]>

* Update docs/cli_development.md

Co-Authored-By: noroadsleft <[email protected]>

* Update docs/cli_development.md

Co-Authored-By: noroadsleft <[email protected]>

* Address yan's comments.

* Apply suggestions from code review

suggestions from @noahfrederick

Co-Authored-By: Noah Frederick <[email protected]>

* Apply suggestions from code review

Co-Authored-By: Noah Frederick <[email protected]>

* Remove pip3 from the test runner

docs/_summary.md

@@ -9,6 +9,7 @@
 * [QMK Basics](README.md)
   * [QMK Introduction](getting_started_introduction.md)
   * [QMK CLI](cli.md)
+  * [QMK CLI Config](cli_configuration.md)
   * [Contributing to QMK](contributing.md)
   * [How to Use Github](getting_started_github.md)
   * [Getting Help](getting_started_getting_help.md)
@@ -48,7 +49,7 @@
   * [Useful Functions](ref_functions.md)
   * [Configurator Support](reference_configurator_support.md)
   * [info.json Format](reference_info_json.md)
-  * [Python Development](python_development.md)
+  * [Python CLI Development](cli_development.md)
 
 * [Features](features.md)
   * [Basic Keycodes](keycodes_basic.md)