feat: add reauth feature to user credentials (#727)

* feat: add reauth support to oauth2 credentials

* update
diff --git a/setup.py b/setup.py
index 16ba98c..ef723f8 100644
--- a/setup.py
+++ b/setup.py
@@ -33,6 +33,7 @@
 extras = {
     "aiohttp": "aiohttp >= 3.6.2, < 4.0.0dev; python_version>='3.6'",
     "pyopenssl": "pyopenssl>=20.0.0",
+    "reauth": "pyu2f>=0.1.5",
 }
 
 with io.open("README.rst", "r") as fh: