ENH: Remove OpenIGTLink nodes
Now part of OpenIGTLinkIF since https://github.com/openigtlink/OpenIGTLinkIF/commit/8cc7d5b849bc72f98c580c9fb9a20172160ba25b
ENH: Implemented registration using FiducialToImageRegistration module
Require to have lchauvin/SphericalFiducialDetection@09285feae2d63, lchauvin/ICPRegistration@513e629b801b8 and lchauvin/FiducialToImageRegistration@474ce35955896366 modules already installed in Slicer