[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

keyboards/hineybush/h660s/readme.md

@@ -0,0 +1,19 @@
+# h660s
+
+![h660s](https://i.imgur.com/U7s0xJL.png)
+
+A 65% layout for the Sakura660.
+
+* Keyboard Maintainer: [hineybush](https://github.com/hineybush)
+* Hardware Supported: Sakura660 by Fropsie and Proto[Typist]
+* Hardware Availability: Prototypes, upcoming group buy
+
+Make example for this keyboard (after setting up your build environment):
+
+    make hineybush/h660s:default
+
+Flashing example for this keyboard:
+
+    make hineybush/h660s:default:flash
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).