Implement reading of potree BIN file structure

[TimeScience]

See for example: http://data.traitcapture.org/fm/files/pointclouds_potree/618f1ff505ffe2856850142b8f2d4fed2017-03-16-nac-all-abcdefghi-pix4d-r01-merge_group1_densified_point_cloud.laz/data/r/66206/

[TimeScience]

This works great (point clouds from traitcapture can now be dropped on the software and they are generally parsed correctly), but the process usually crashes the las tools.
When a new file is dropped on the lasVR program, after it has been ingested, it should load correctly.