Updated SlicerIGT extension: Added Fiducial Registration Wizard module.

Compare link for SlicerIGT superbuild: https://github.com/SlicerIGT/SlicerIGT/compare/043fc3a32aec07e177689e464ab8f09c1e3fdd20…4289a6e52a06c9cfa84bc4acad1ac7f43549ae4f.

Fiducial Registration Wizard module: https://github.com/SlicerIGT/FiducialRegistrationWizard.