Support Token Registration

[ShadowJonathan]

matrix-org/matrix-spec-proposals#3231 has landed and is specified with matrix-org/matrix-spec-proposals#3616, and has landed in unstable-spec (pre-release, post-formalisation) with ruma/ruma#834

It'd be nice if rust-sdk could expose this registration/authentication flow, so that clients like Fractal could implement this flow easily.

[ShadowJonathan]

Actually, it seems like users can already use this with register, they only have to pass additional uiaa data.

Additionally, the token validity request could probably be requested by the library consumer itself via check_registration_token_validity::Request

[jplatte]

Actually, it seems like users can already use this with register, they only have to pass additional uiaa data.

Additionally, the token validity request could probably be requested by the library consumer itself via check_registration_token_validity::Request

I agree with this assessment. Can this issue be closed?