Add console entrypoint

setup.cfg

@@ -33,6 +33,9 @@ install_requires =
     importlib-metadata>=0.12
     requests
     gfal2-python
+[options.entry_points]
+console_scripts =
+      atdb_mngr = atdb.main:main
 
 [flake8]
 max-line-length = 88