Would you mind to add the Waveshare eInk-Pico 2.9" Display?

[micheld93]

Would you mind to add the Waveshare eInk-Pico 2.9" Display?

It's this display: https://www.waveshare.com/Pico-ePaper-2.9-B.htm

[gpshead]

I haven't touched this code in several years, it probably needs adjusting for new hardware. PRs welcome, though I may not have the ability to test so i'll just be reviewing to see if it makes sense before merging.

[micheld93]

Well, my skills are not that advanced to be able to edit your code by myself. Testing is something I would offer.