[Keyboard] Add Otaku split (#6207)

* init

* update

* split master left and right for qmk configurator

* add

* copy rev0 to rev1

* change rev1 file from rev0

* move rev0 keymap

* remove root keymap

* add comma

* update keymap

* add info.json

* update readme

* Update keyboards/otaku_split/rev1/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Update keyboards/otaku_split/rev0/config.h

Co-Authored-By: Drashna Jaelre <drashna@live.com>
* Update keyboards/otaku_split/rev0/readme.md

Co-Authored-By: Drashna Jaelre <drashna@live.com>
* rename .c, .h

* rename c&h files

* update rev0 readme

* copy default to sample

* remove VA_ARGS from default, rev0

* remove otaku_split.h and fixed sample keymap

* update keymaps

* update readme

* Update keyboards/otaku_split/rev1/config.h

Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Update keyboards/otaku_split/rev0/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>
* remove no need keycodes

* add rev0 infojson

* Update keyboards/otaku_split/rev0/config.h

Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Update keyboards/otaku_split/rev0/readme.md

Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Update keyboards/otaku_split/rev1/readme.md

Co-Authored-By: fauxpark <fauxpark@gmail.com>
* remove no user custom keycodes

* remove backslash

* remove backslash