sso login callback is hardcoded to localhost #20
Description
follow-up of #17 (comment)
We should have a way for user to specify where the oidc callback should listen
(this can be set through the https://docs.rs/matrix-sdk/latest/matrix_sdk/matrix_auth/struct.SsoLoginBuilder.html 's server_url method; the question is how to interface that with the user in the login flow -- probably another message before the sso request)
This is easy enough, will do when/if someone requests.