Add from __future__ import annotations for Python 3.9 support

Author: tianyizheng02

pittapi/sports.py

@@ -17,6 +17,8 @@
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 """
 
+from __future__ import annotations
+
 import requests
 
 from typing import Any, NamedTuple