TYP: misc typing fixes for pandas\core\frame.py
pandas\core\frame.py:1091: error: namedtuple() expects a string literal as the first argument  [misc]
pandas\core\frame.py:4594: error: Need type annotation for 'names' (hint: "names: List[<type>] = ...")  [var-annotated]
thanks @simonjayhawkins 