Accelerometer and gyroscope modules #78
Description
It would be nice to have support for accelerometers and gyroscopes. The master logic is already there to forward the data as axes in our gamepad reports, but there is 1-2 hours of legwork to create the module firmware. We designed our module boards to bring up SPI1 on the header pins, so we would have to find accel/gyro boards that can communicate over SPI.