add http-api

http-api/cognito.py

@@ -0,0 +1,8 @@
+def get_user(access_token: str, *, idp_client) -> dict | None:
+    """Gets the user attributes and metadata for a user."""
+    try:
+        user = idp_client.get_user(AccessToken=access_token)
+    except idp_client.exceptions.ClientError:
+        return None
+    else:
+        return {attr['Name']: attr['Value'] for attr in user['UserAttributes']}