ENH: Support passing markups to CLI specifying IJK coordinate
Created by: jcfr
NOTE: Commit will be squashed before integration
This commit allows associating any markupsNode with a reference image. The association is then used to automatically convert to/from IJK coordinate using SetMarkupPointIJK()/GetMarkupPointIJK() used in vtkMarkupsNode::WriteCLI().
Co-authored-by: Deepak Chittajallu deepak.chittajallu@kitware.com