Mark create(...) externally callable. (#1062)

Signed-off-by: Shah, Karan <[email protected]>

openfl/interface/collaborator.py

@@ -115,14 +115,17 @@ def start_(plan, collaborator_name, data_config, secure):
 )
 @option("-s", "--silent", help="Do not prompt", is_flag=True)
 def create_(collaborator_name, data_path, silent):
+    create(collaborator_name, data_path, silent)
+
+
+def create(collaborator_name, data_path, silent):
     """Creates a user for an experiment.
 
     Args:
         collaborator_name (str): The certified common name of the collaborator.
         data_path (str): The data path to be associated with the collaborator.
         silent (bool): Do not prompt.
     """
-
     if data_path and is_directory_traversal(data_path):
         echo("Data path is out of the openfl workspace scope.")
         sys.exit(1)