Lidar performance#18

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cconti-rr wants to merge 4 commits intomainfrom

LidarPerformance

Commits on Oct 15, 2021

added initial version of load balancing in time of 3d lidar raycasts
cconti-rr
committed

Commits on Oct 18, 2021

changed 'alpha' to affect Value instead of transparency, but currently not being used as it does not seem to work as intended
cconti-rr
committed
moved alpha
cconti-rr
committed

Commits on Oct 22, 2021

parallelized pointcloud2 message filling
cconti-rr
committed