RGB_
* Remove deprecated `RGB_` and Mouse keycodes * Update old mouse keycodes, 0-9/A-M * Update old mouse keycodes, N-Z & layouts * Missed some stuff
* `KC_PGDOWN` -> `KC_PGDN` * `KC_PSCREEN` -> `KC_PSCR` * `KC_SCOLON` -> `KC_SCLN` * `KC_BSLASH` -> `KC_BSLS` * `KC_BSPACE` -> `KC_BSPC`