Local itk-vtk-viewer

It is ready to install the itk-viewer in case it is not installed in qim https://www.notion.so/qim-dtu/Improve-CLI-viz-f4254522fa1e4159b8ce6d9206793b13

qim3d/utils/cli.py

@@ -157,7 +157,7 @@ def main():
         # Make k3d plot
         if args.method == 'itk-vtk-viewer':
             print("\nGenerating itk-vtk-viewer plot...")
-            qim3d.viz.itk_vtk_viewer.viewer("Jou")
+            qim3d.viz.itk_vtk_viewer.Viewer("Jou")
         elif args.method == 'k3d':
             volume = qim3d.io.load(str(args.source))
             print("\nGenerating k3d plot...")