- timestamp is uORB publication metadata - this allows us to see what the system saw at publication time plus the latency in estimation
* msg: Add EKF-GSF yaw estimator logging data * ecl: update to version with EKF-GSF yaw estimator * ekf2: Add param control and logging for EKF-GSF yaw estimator * logger: Add logging for EKF-GSF yaw esimtator