Adds the device trees, Kconfig, and documentation files.
The following features have been confirmed working on hardware:
* LED
* Button
* ST7735 TFT-LCD
* External QuadSPI NOR Flash memory
* External SPI NOR Flash memory
* USB CDC ACM
* microSD card
Signed-off-by: Charles Dias <charlesdias.cd@outlook.com>
Charles Dias