Python package improvements

Added an endpoint for getting the actual stored responses, and used it to test and improve the python package.

client-libs/python/openpipe/shared.py

@@ -1,5 +1,5 @@
 from openpipe.api_client.api.default import (
-    api_report,
+    report as api_report,
     check_cache,
 )
 from openpipe.api_client.client import AuthenticatedClient