boards: adafruit: add initial support esp32s3 feather tft

The Adafruit Feather ESP32S3 is a development board in the Feather
standard layout, sharing peripheral placement with other devices labeled
as Feathers or FeatherWings. The board is equipped with an ESP32-S3 mini
module, a lithium ion battery charger and a USB-C connector. Compared to
the base model, this TFT variant additionally comes with a 240x135 pixel
IPS TFT color display.

Signed-off-by: Leon Rinkel <leon@rinkel.me>