SIM_Vicon: label fields going into VISION_SPEED_ESTIMATE packets

[peterbarker]

2024-03-07 13:56:23.83: VISION_SPEED_ESTIMATE {usec : 5518767705, x : -0.22238440811634064, y : -2.763803243637085, z : -11.770814895629883, covariance : [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], reset_counter : 0}
2024-03-07 13:56:23.87: VISION_SPEED_ESTIMATE {usec : 5518859335, x : -0.22510573267936707, y : -2.9296646118164062, z : -11.751978874206543, covariance : [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], reset_counter : 0}
2024-03-07 13:56:23.95: VISION_SPEED_ESTIMATE {usec : 5518880160, x : -0.22543571889400482, y : -2.9665188789367676, z : -11.747527122497559, covariance : [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], reset_counter : 0}
2024-03-07 13:56:24.00: VISION_SPEED_ESTIMATE {usec : 5518983452, x : -0.2256108820438385, y : -3.144892454147339, z : -11.725088119506836, covariance : [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], reset_counter : 0}