[Core] Add support for RISC-V builds and GD32VF103 MCU (#12508)

* Add support for RISC-V builds and GD32VF103 MCU

* Add toolchain selection in chibios.mk based on the mcu selected in
mcu_selection.mk
* Reorder and added comments to chibios.mk to have a streamlined makefile
* Add GD32VF103 mcu to possible targets for QMK.
* Add STM32 compatibility for GD32VF103 MCU, this is hacky but more efficent
  then rewriting every driver.
* Add GigaDevice DFU bootloader as flash target, please note that
  dfu-util of at least version 0.10 is needed.
* Add analog driver compatibility
* Add apa102 bitbang driver compatibility
* Add ws2812 bitbang driver compatibility
* Add eeprom in flash emulation compatibility
* Allow faster re-builds with ccache

* Add SiPeed Longan Nano to platform files

* Add SiPeed Longan Nano Onekeys

* Make quine compatible with other bootloaders

* Support builds with picolibc

* Add risc-v toolchain to arch and debian/ubuntu scripts

bootloader.mk

@@ -34,6 +34,8 @@
 #     stm32duino   STM32Duino (STM32F103x8)
 #     stm32-dfu    STM32 USB DFU in ROM
 #     apm32-dfu    APM32 USB DFU in ROM
+# RISC-V:
+#     gd32v-dfu    GD32V USB DFU in ROM
 #
 # BOOTLOADER_SIZE can still be defined manually, but it's recommended
 # you add any possible configuration to this list
@@ -125,6 +127,13 @@ ifeq ($(strip $(BOOTLOADER)), apm32-dfu)
     DFU_ARGS ?= -d 314B:0106 -a 0 -s 0x08000000:leave
     DFU_SUFFIX_ARGS ?= -v 314B -p 0106
 endif
+ifeq ($(strip $(BOOTLOADER)), gd32v-dfu)
+    OPT_DEFS += -DBOOTLOADER_GD32V_DFU
+
+    # Options to pass to dfu-util when flashing
+    DFU_ARGS ?= -d 28E9:0189 -a 0 -s 0x08000000:leave
+    DFU_SUFFIX_ARGS ?= -v 28E9 -p 0189
+endif
 ifeq ($(strip $(BOOTLOADER)), kiibohd)
     OPT_DEFS += -DBOOTLOADER_KIIBOHD
     ifeq ($(strip $(MCU_ORIG)), MK20DX128)