[Keyboard] Add keysofkings folder and twokey keyboard (#10754)

* Add keysofkings folder and twokey keyboard

* Update readme.md

* Update readme.md

* Update config.h

* Update config.h

* Update keymap.c

* Update twokey.c

* Update twokey.h

* Update keyboards/keysofkings/twokey/config.h

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/keysofkings/twokey/readme.md

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/keysofkings/twokey/rules.mk

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/keysofkings/twokey/rules.mk

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/keysofkings/twokey/readme.md

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update info.json

* Update keymap.c

* Update keyboards/keysofkings/twokey/info.json

Co-authored-by: Ryan <fauxpark@gmail.com>

Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/keysofkings/twokey/rules.mk

@@ -0,0 +1,23 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite     # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = no        # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = yes          # Audio output
+ENCODER_ENABLE = yes