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/__init__.py

@@ -13,3 +13,5 @@ from .misc import (
     downscale_img,
     scale_to_float16,
 )
+
+from .server import start_http_server
\ No newline at end of file