Adding Support for a new Board

Before creating the definition of a new board (with a new board number), you should consider to use one of the generic boards as a starting point and just change your custom pins in the configuration. Further details can be found here

To define a new board follow these steps:

1. Get a new free board number for the AudioKitSettings.h and update the Readme.md
2. Create a new pin configuration file in /src/audio_board. I suggest that you copy an existing file and then just do your changes.
3. Add the new logic in src/audio_hal/audiokit_board_select.h