[DRAFT] Support 320x240 screen sizes and ili9341 displays

[kdmukai]

Description

WORK IN PROGRESS!!

• Adds a new DisplayDriver class to hide away details specific to ST7789, ILI9341, and (eventually?) ILI9486.
• Changes ST7789 driver (to facilitate support for 320x240) to: https://github.com/russhughes/st7789_mpy
• Adds ILI9341 driver adapted from https://github.com/adafruit/Adafruit_Python_ILI9341

This pull request is categorized as a:

• New feature

Checklist

• I’ve run pytest and made sure all unit tests pass before sumbitting the PR

If you modified or added functionality/workflow, did you add new unit tests?

• No, I’m a fool
• Yes
• N/A

I have tested this PR on the following platforms/os:

• Raspberry Pi OS Manual Build
• SeedSigner OS on a Pi0/Pi0W board
• Other

[newtonick]

I need to get all the required hardware for this so I can either assemble before or during TABConf.

[kdmukai]

Most of the st7789 and ili9341 dev boards seem to be the same (even down to the order of their pins).

This is the ili9341 I've been working off of:
https://a.co/d/0V4VZQo

Other useful bits:

1. https://www.adafruit.com/product/2029
2. https://a.co/d/fvfNIQZ

I'm using 1.) to seat the existing Waveshare display hat and just wire out the joystick and KEY1-3 lines to 2.) which also has the connections to the ili9341. And then 2.) connects to a Pi Zero via ribbon cable.