[Keyboard] New Keyboard: Booster (#6486)
* initial commit
* port over the kbfirmware json
* add numpad_5x4 LAYOUT support
* fix up layout macro to allow community layout support
* add a sparse readme on how to contact Percent Studio
* change .h to a .md file
* fix firmware file too large error
* Update keyboards/percent/booster/info.json
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update keyboards/percent/booster/info.json
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update keyboards/percent/booster/info.json
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update keyboards/percent/booster/info.json
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update keyboards/percent/booster/info.json
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update keyboards/percent/booster/keymaps/default/keymap.c
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update keyboards/percent/booster/keymaps/default/keymap.c
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update keyboards/percent/booster/keymaps/default/keymap.c
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update keyboards/percent/booster/keymaps/default/keymap.c
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update keyboards/percent/booster/keymaps/default/keymap.c
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
* Update keyboards/percent/booster/keymaps/default/keymap.c
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
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