Q10 blackberry keyboard

Micropython implementation of blackberry Q10 keyboard interface to esp32-wroom board.

I'm using the following breakout board for conneting the keyboard to the esp32: https://github.com/arturo182/bbq10kbd_breakout

Sym button swithes to symbols (and digits)
Either of the Shift keys switches to capital letters
Alt key switches to cyrillic keyboard.

Todo

Fix 'backspace' issue in terminal.
Connect oled ssd1306 display for text on screen, instead in the terminal
Implement button interrupts instead of regular looping through the key matrix.