Update and add testing for the new Boards

All the new Boards need to be tested similarly to how [ExgPill](https://github.com/neuralbertatech/natKit/blob/main/test/board/test_exg_pill.py) is tested and the [ExgPill](https://github.com/neuralbertatech/natKit/blob/main/test/board/test_exg_pill.py) testing needs to be updated to include at least one test for each public method.