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

@@ -8,6 +8,9 @@ def run_viewer(filename:str = None):
     command = 'itk-vtk-viewer'
     if filename is not None:
         command = F'{command} {filename}'
+    
+    #First try if the user doesn't have it globally
+    output = subprocess.run(command, shell = True, capture_output= True)
 
     output = subprocess.run(F'export PATH="$PATH:{VIEWER_DIR}/node_modules/.bin/:{get_node_binaries_dir(NVM_DIR)}" && {command}', shell = True, capture_output= True)
     if output.stderr: