Add support for RFC8252 (https://datatracker.ietf.org/doc/html/rfc8252#section-7.1) which allows for users to specify custom scheme URI's for OAUTH callback urls. This would allow native application developers to not have to piggyback through a server and instead they can configure their applications to handle these schemes for confirming the oauth callback, for example my-app-name:/authorization?code=XXXXX