Feature request: read from onboard DMP

The 6050 MPU has a Digital Motion Processor (DMP) chip onboard that runs motion algorithms and sensor fusion to create more accurate state data. If this could be read and accessed using this package that would be great!

For reference, I believe this library https://github.com/jrowberg/i2cdevlib/tree/master/Arduino/MPU6050 Have figure it out.

Start by reviewing the referenced Arduino/MPU6050 implementation in the i2cdevlib repository and comparing its DMP support with this package. Determine how DMP state data should be exposed through Adafruit_CircuitPython_MPU6050 and verify that the requested motion data can be read from the MPU6050.

Written by the indexing model from the issue text.