fix entry points in setup.py

Summary: For `pip install` without -e, we need to name the entry point functions in setup.py.

Reviewed By: patricklabatut

Differential Revision: D35933037

fbshipit-source-id: be15ae1a4bb7c5305ea2ba992d07f3279c452250

setup.py

@@ -149,8 +149,8 @@ setup(
     },
     entry_points={
         "console_scripts": [
-            f"pytorch3d_implicitron_runner={trainer}.experiment",
-            f"pytorch3d_implicitron_visualizer={trainer}.visualize_reconstruction",
+            f"pytorch3d_implicitron_runner={trainer}.experiment:experiment",
+            f"pytorch3d_implicitron_visualizer={trainer}.visualize_reconstruction:main",
         ]
     },
     ext_modules=get_extensions(),