Hardware request: add accelerometer & vibration motor

[adrianstevens]

I think this was Bryan's idea originally, if it doesn't impact the cost too heavily, it would be fun to add an accelerometer.

And if we got really fancy we could also add a vibration motor.

I also think we talked about adding a qwiic connector.

[adrianstevens]

Accelerometer and qwiic connector added

Leaving issue open to track vibration motor request