Initial pass at data driven new-keyboard subcommand (#12795)

* Initial pass at a data driven keyboard subcommand

* format

* lint

* Handle bootloader now its mandatory

Misc size regression script improvements. (#16268)

* Misc size regression script improvements.

- Sets environment variable SIZE_REGRESSION_EXECUTING during execution
  so hook scripts like `post-checkout` may skip processing.
- Forces checkout of the target branch, including removal of all
  temporary object files in the process.
- Prints out a warning on exit stating that the git repository is in an
  indeterminate state, and the user needs to swap back to whatever
  intended branch they were working with originally.

* Remove `git clean`

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] M60 split 5x12 lego pcb (#14383)

* add m60 lego case in split, with stm32f401 and 411

* Update keyboards/mlego/m60_split/m60_split.h

* Update keyboards/mlego/m60_split/rev1/config.h

* Update keyboards/mlego/m60_split/rev2/config.h

* address the moving of enum in keymaps

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] [eternal_keypad] Update product_id and add keymap (#16253)

Merge remote-tracking branch 'origin/master' into develop

[Keymap] Updated Planck layout - jimmysjolund (#16245)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

Fixup bootloaders. (#16256)

Reduce firmware size for dztech/dz60rgb_wkl/v2_1:via (#16254)

Remove half implemented micronucleus bootloader support (#16252)

Add layout change callbacks to VIA (#16087)

* Add layout change callbacks to VIA

* Update worklouder example

Merge remote-tracking branch 'origin/master' into develop

Fix wheatfield/split75 iso info.json (#16250)

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] Add aliceclonergb (#14285)

Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: SneakboxKB <64090325+mujimanic@users.noreply.github.com>

Merge remote-tracking branch 'origin/master' into develop

add 'info_config.h' into docs/hardware_keyboard_guidelines.md (#16247)

Added info_config.h added in #10817 to the include order description of config.h.

Merge remote-tracking branch 'origin/master' into develop

[Docs] Address some typos (also in moonlander matrix.c) (#16248)

* [Docs] Fix repeated words

* [Keyboard] Fix moonlander output

The left/right orientation differs from Ergodox EZ.