Signing in through one.ems.host using OpenID Connect

[christ-offer]

Hey, it seems that it's not possible at the moment (unless I have overlooked some config option) to sign in through one.ems.host and their OIDOC(?) sign-in method.

Would be really nice to have! :)

[ulyssa]

It looks like the SDK doesn't support OpenID Connect yet (see matrix-org/matrix-rust-sdk#859 and the draft PR matrix-org/matrix-rust-sdk#1019), but it does seem to be on its way. Once that's merged and available in a release it should be possible to add support for it.