[Keyboard] h660s by hineybush (#10221)
* add h660s
* add via support to h660s
* update readme
* Update keyboards/hineybush/h660s/keymaps/via/readme.md
* Update keyboards/hineybush/h660s/keymaps/via/keymap.c
* Update keyboards/hineybush/h660s/keymaps/via/keymap.c
* Update keyboards/hineybush/h660s/h660s.h
* Update keyboards/hineybush/h660s/h660s.h
* Update keyboards/hineybush/h660s/h660s.h
* Update keyboards/hineybush/h660s/h660s.h
* Update keyboards/hineybush/h660s/h660s.h
* Update keyboards/hineybush/h660s/keymaps/default/keymap.c
* Update keyboards/hineybush/h660s/keymaps/default/keymap.c
* Update keyboards/hineybush/h660s/keymaps/via/keymap.c
* Update keyboards/hineybush/h660s/keymaps/via/keymap.c
* Update keyboards/hineybush/h660s/readme.md
* Update keyboards/hineybush/h660s/readme.md
* Update keyboards/hineybush/h660s/keymaps/default/keymap.c
* Update keyboards/hineybush/h660s/keymaps/default/keymap.c
* Update keyboards/hineybush/h660s/info.json
* Update keyboards/hineybush/h660s/h660s.h
* Update keyboards/hineybush/h660s/h660s.h
* Update keyboards/hineybush/h660s/h660s.h