auth_oidc: add id token 'as_dict' method (#37871)

src/authentic2_auth_oidc/utils.py

@@ -127,6 +127,15 @@ class IDToken(object):
                     _('Encoded ID Token must be either binary or string data'))
         self._encoded = encoded
 
+    def as_dict(self, provider, raises=False):
+        try:
+            parsed = parse_id_token(self._encoded, provider)
+        except JWException as e:
+            if raises:
+                raise IDTokenError(e)
+            parsed = {}
+        return parsed
+
     def deserialize(self, provider):
         try:
             decoded = parse_id_token(self._encoded, provider)