Add support for NS2009 I²C resistive touchscreen IC

[NuclearKitty]

Describe the problem you have/What new integration you would like

I would like to see support added for the NS2009 I²C resistive touchscreen IC

Please describe your use case for this integration and alternatives you've tried:

The BigTreeTech TFT35 SPI display runs on a ILI9488 chip, so the screen itself is already compatible (and confirmed working by me). Adding support for the NS2009 touch IC would make this display fully compatible with ESPHome and provide users with an extremely affordable option for integrating a touchscreen into their project.

Additional context

Schematics and pinouts for the TFT35 SPI and the technical datasheet for the NS2009 Touch IC can be found under
https://github.com/bigtreetech/TFT35-SPI/tree/master/v2

The pin labeling on the display is a little weird.
RS = D/C Pin
NSS = CS Pin

The touch IC works over regular 2-wire I²C, but there is also a seemingly optional IORQ interrupt pin available.

An Arduino library for the NS2009 does also seem to exist under:
https://github.com/Stanimir-Petev/NS2009