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/viz/itk_vtk_viewer/run.py

@@ -45,7 +45,7 @@ def itk_vtk_viewer(filename:str = None):
             dir = get_dir()
             viewer_dir = get_viewer_dir(dir)
             viewer_bin = get_viewer_binaries(viewer_dir)
-            if platform.system() == "Linux":
+            if platform.system() in ["Linux", "Darwin"]:
                 try:
                     node_bin = get_node_binaries_dir(get_nvm_dir(dir))
                 except NotInstalledError: