Added support for ESP32_2432S028R

[kasperg3]

I have added initial support the 2432S028R, using LGFX:

I have a comment regarding the generalization of adding support for new boards. At some point, it might make sense to use board configurations such as from here, as this makes it more straight forward to implement new boards. Then the configuration in the LGFX.cpp files will have the right build flags enabling: `

ifdef DISPLAY_ST7789_SPI

// INIT code here

endif

`

This might also enable this repo to be integrated in the main BPL repo. Let me know what you think @vitotai .

[kasperg3]

@vitotai Is there a contribution guideline?

[kasperg3]

@vitotai