* Generate a new project for the KBD4x
* Specify the possible layouts for the KBD4x - MIT and grid
* Fill out the readme for the KBD4x
* Configure the default keymap and wiring configuration as specified on http://qmkeyboard.cn/
* Add info.json for QMK Configurator
* Enable backlight support for the KBD4x
* Standardise on LAYOUT_planck_mit/LAYOUT_ortho_4x12 layout names
* Add whitespace so the Readme will render correctly
* Disable mouse keys support for the KBD4x to make the firmware small enough