Add support for e-Ink displays (ePaper Sharewave kind). Beta testers welcome!

[melkati]

Support for e-Ink and e-Paper displays, such as Shareware. Preliminary work for the low CO2 consumption version of CO2 Gadget.

Developing actively with the following boards and displays:

• Lilygo T5 https://s.click.aliexpress.com/e/_DEryYnP (with DEPG0213BN display)
• Lilygo T7 board (https://s.click.aliexpress.com/e/_DlVKKFf) with GDEM029T94 display

Main tasks:

• [x] Implement basic support for e-Ink displays
• [x] Add common layout from TFT
• [ ] Optimize partial updates
• [ ] Support in deep sleep
• [ ] Optimize display redraw after deep sleep