LiDAR & 3D camera drivers from SICK

SICK’s git repo is growing. See the new sick_scan for drivers for the TiM551, TiM561, and TiM571, plus the new 4-layer MRS1000 LiDAR. Check it out: https://github.com/SICKAG.

Binaries for sick_scan (supports SICK LiDARs: MRS1104, TiM551, TiM561, TiM571) now in the testing respository. Have at it!

Definitely worth noting that the sick_ldmrs_laser driver works with IBEO LUX devices too! Good work, guys!