fix basic auth mode for oidc
fix for https://bugs.linphone.org/view.php?id=13667 Basically, by default Qt provide client secret in the query of POST request. Some server may require to put it in an Authorization header
fix for https://bugs.linphone.org/view.php?id=13667 Basically, by default Qt provide client secret in the query of POST request. Some server may require to put it in an Authorization header