Keyboard/grandiceps (#11933)

* Add Grandiceps keyboard

* Fix info.json

* Fix typo

* Fix typo

* cleanup format

* move mcu files to root

* Updated with PR changes

* Apply suggestions from code review

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

* Apply suggestions from code review

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

* PR issues for chibios confmigrate

* PR Changes

Co-authored-by: Thys de Wet <thys@vectorphoto.co.uk>
Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/tkw/grandiceps/rules.mk

@@ -0,0 +1,30 @@
+# MCU name
+MCU = STM32F411
+
+# 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 = yes       # Enable keyboard RGB underglow
+ENCODER_ENABLE = yes        # Enable rotary encoder support
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = no           # Audio output
+KEYBOARD_SHARED_EP = yes    # Free up some extra endpoints - needed if console+mouse+extra
+
+SPLIT_KEYBOARD = yes
+SERIAL_DRIVER = usart
+OLED_DRIVER_ENABLE = yes
+WS2812_DRIVER = pwm
+OPT_DEFS += -DSTM32_DMA_REQUIRED=TRUE
+
+# Address of the bootloader in system memory
+STM32_BOOTLOADER_ADDRESS = 0x1FFF0000