Add Support for Sending Quaternion or Additional Rotation Data via BLE Joystick

[satriagilang413]

Hi, thank you for the great project!

I am currently using the BLE Joystick to send the following data successfully:
Channel 1: Tilt (X-axis rotation)
Channel 2: Roll (Y-axis rotation)
Channel 3: Pan (Z-axis rotation)

Currently i can send Tilt to channel 1 , Roll to channel 2, Pan to channel 3.
How to send more data like Quaternion Output form live data to BLE Joystick?

How to get X,Y,Z Rotation ?