Adapted Bongo cat animation to the Sofle Keyboard

Made use of the second OLED on the Sofle Keyboard and ported the Bongo cat WMP animation from the Kyria keyboard.

QMK firmware for this can be found on my github: https://github.com/foureight84/qmk_firmware/tree/sofle_foure...

Also, if you want to integrate the Pimoroni Track ball to the Sofle Keyboard, I've written a guide: https://github.com/foureight84/sofle-keyboard-pimoroni

The original code was done by j-inc: https://github.com/qmk/qmk_firmware/tree/master/keyboards/ky...