LD06: Record only 2deg slices, I was running into drouble on my Pixhawk

[mw46d]

• Some recording changes were taken from the RPLidar driver code.
• Using the average of the 12 readings/package is not a good idea. Those packages don't describe the same 'angle' for each rotation. So you end up with a lot of different distances per package. I tried to fix things to well-defined 2deg slices and take the minimum reading reported.