New Compass 3D node

Слиты nikitronn запросил слияние github/fork/vicdoval/compass_3d_node в master

Created by: vicdoval

New Intersection Line Sphere Node (a. k. a. Compass 3D)

compass_3d arc_line_constant_dist all_intersections_sphere_cylinder mechanism

  • Code changes complete.
  • Code documentation complete.
  • Documentation for users complete (or not required, if user never sees these changes).
  • Manual testing done.
  • Unit-tests implemented.
  • Ready for merge.