Add Lerdge S,X,K (#18302)

.github/workflows/test-builds.yml

Marlin/src/core/boards.h

Marlin/src/module/temperature.cpp

Marlin/src/pins/pins.h

Marlin/src/pins/stm32f4/pins_LERDGE_K.h

Marlin/src/pins/stm32f4/pins_LERDGE_S.h

Marlin/src/pins/stm32f4/pins_LERDGE_X.h

Marlin/src/sd/usb_flashdrive/lib-uhs2/Usb.cpp

Marlin/src/sd/usb_flashdrive/lib-uhs2/confdescparser.h

Marlin/src/sd/usb_flashdrive/lib-uhs2/masstorage.cpp

Marlin/src/sd/usb_flashdrive/lib-uhs2/masstorage.h

Marlin/src/sd/usb_flashdrive/lib-uhs2/message.cpp

Marlin/src/sd/usb_flashdrive/lib-uhs2/usb_ch9.h

...ive/lib-uhs3/UHS_host/UHS_BULK_STORAGE/UHS_BULK_STORAGE.h

...-uhs3/UHS_host/UHS_BULK_STORAGE/UHS_BULK_STORAGE_INLINE.h

...src/sd/usb_flashdrive/lib-uhs3/UHS_host/UHS_host_INLINE.h

Marlin/src/sd/usb_flashdrive/lib-uhs3/UHS_host/UHS_usb_ch9.h

Marlin/src/sd/usb_flashdrive/lib-uhs3/UHS_host/UHS_usbhost.h

buildroot/share/PlatformIO/boards/LERDGE.json

buildroot/share/PlatformIO/ldscripts/lerdge.ld