Add support for Waveshare high definition, 6inch E-Ink display

[matiaskorhonen]

I'd be interested in support for the Waveshare 1448×1072 high definition, 6inch E-Ink display: https://www.waveshare.com/6inch-hd-e-paper-hat.htm

• SKU: 17590
• Development docs: https://www.waveshare.com/wiki/6inch_HD_e-Paper_HAT

I am a developer, but when it comes to C-programming I'm somewhat out of my comfort zone but if there's anything I can do to help out, please let me know. FWIW, I own one of these displays.

[samsonmking]

@matiaskorhonen looks like that display uses a different hardware driver board than the displays I've integrated so far. It's certainty possible to pull in the c files and expose the functionality to node. However, it's probably a little harder for me to test without having the hardware myself, because it would be a completely new implementation.

If multiple people express interest in adding support for this display I'll consider purchasing it for development. I'm also open to borrowing or receiving displays through sponsorship.

[mxzgithub]

I have the same 6in HD Display, but no C coding experience. The driver board is the IT8951. https://github.com/waveshare/IT8951

Someone already tries to implement it: https://github.com/samsonmking/epaper.js/pull/87 I do not know if this commit is functional.