boards: adafruit: add initial support esp32s3_feather_tft_reverse

The Adafruit Feather ESP32S3 TFT Reverse 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 fuel gauge, a USB-C and Qwiic/STEMMA-QT connector.
This variant additionally comes with a 240x135 pixel IPS TFT color display
on the backside of the boards and with 3 buttons.

Signed-off-by: Philipp Steiner <philipp.steiner1987@gmail.com>