A simple GxEPD2 driver for 3-color red-black-white e-paper screen DEPG0750RWF86BF (also known as FPC-8612).
This driver is based on the GxEPD2_750c_Z08 implementation, but uses a different initialization sequence.
Tested with the Waveshare e-paper driver HAT v2.3.
SPI driver documentation is available here.
