AttitudeMahonyFilterParameters struct
          #include <iDynTree/AttitudeMahonyFilter.h>
        
        set up the quaternion EKF
Public variables
- double time_step_in_seconds
 - discretization time step in seconds, default value:
 - double kp
 - Mahony gain over the correction from IMU measurements, default value: .
 - double ki
 - Mahony gain over the gyro bias evolution, default value: .
 - bool use_magnetometer_measurements
 - double confidence_magnetometer_measurements
 - confidence on magnetometer measurements, default value: