CYD Board Support in arduino-esp32 Core

[Xylopyrographer]

PSA: The upcoming arduino-esp2 core v3.1.0 will include the CYD board.

It will be selectable from the Boards manager in the Arduino IDE v2 by searching for "CYD".

It includes pin definitions for the on-board devices (LED, TFT display, touchpad, SD card, LDR) and alias' for the SPI buses.

Also has some start-up code to define the LED GPIO pins as outputs and to turn off all LEDs.

As well as simplification of the Tools menu showing only items pertaining to the CYD.

The board definition and variant files will work with cores v 2.0.17 and v3.0.x. Let me know if it would be of interest to post details on how to do this.

Ref: https://github.com/espressif/arduino-esp32/releases/tag/3.1.0-RC1