Keyboard rura66 (#15853)

* add : BlackMask60 and MayShi.No30

* fix:spell miss

* change:keyboard name area

* change: default keymap

* 配列を自分用に変更

* MyKemap Update

* 構成変更

* Add RURA66 new keyboard

* remove additional files

* fix file

* fix info.json from rura66

* fix KC_LANG to KC_LNG from rura66

* Fix readme
- fix purchase URL
- adjust to the recent standard

* Fix rules.mk
- no backlight
- remove DIP switch/Bluetooth
- OLED_DRIVER_ENABLE -> OLED_ENABLE

* Fix rura66.h: add LICENSE

* Fix config.h
- UNUSED_PINS is deprecated
- accept suggestion on PR

* Fix oled_display.c
- remove snprintf()
- OLED_DRIVER_ENABLE->OLED_ENABLE
- oled_task_user() returns false

* Fix config.h
- no SPLIT_HAND_MATRIX_GRID
- no RGB Matrix

* move default keymap readme

* add VIA keymap

* Fix info.json
- Fix keyboard URL
- Change VID/PID

* Fix comments in rules.mk

* fix info.json keyboard url

Co-authored-by: yswallow <1426202+yswallow@users.noreply.github.com>

keyboards/rura66/rev1/keymaps/via/rules.mk

@@ -0,0 +1 @@
+VIA_ENABLE = yes