Simpletest Examples For Boards

During 'in the weeds' discussion of the 8/28 meeting the idea was proposed to add board specific simpletest scripts. these would be added inside the core repo in the board directories.

Then once they exist there, circuitpython.org website can be updated to show a button or link to the simpletest for a board on the board detail page if that board does have it's simpletest already.

The discussion can be heard in the meeting recording here: https://youtu.be/UndmYxxiNZQ?si=lldBLYo50cXk1jHX&t=1627

Start with the 8/28 meeting recording, then inspect the board directories in the core repository and the board detail page in circuitpython.org. Done means board-specific simpletest scripts exist and board pages show a button or link only for boards that have one.

Written by the indexing model from the issue text.