Adding Keyboard: GMMK Pro (#12030)

* GMMK Pro QMK Firmware Code

* info.json added

* updated info.json for the unused keys

* redoing info.json

* readme for pro

* gmmk initial readme

* pipeline fix, issue with compiling gmmk.h

* gmmk pro code formatting changes

* removed rules.mk

* noci file

* Updates

* updated matrix function to match keymap

* updating the keymap layout, renaming matrix, updating layout name to LAYOUT

* fauxpark changes added

* PID VID updates

* removed chconfig and made rules.mk comments cleaner

Co-authored-by: Drashna Jael're <drashna@live.com>

keyboards/gmmk/pro/rules.mk

@@ -0,0 +1,20 @@
+# MCU name
+MCU = STM32F303
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite     # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = yes       # 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 = yes           # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = no           # Audio output
+ENCODER_ENABLE = yes