* Replace Rust's Authentication service by building a Client.
* Drop the Proxy from AuthenticationServiceProxy[Protocol].
* Make sure to call abortOIDCLogin.
* Centralise common ClientBuilder code.
* Update the SDK.
* Update SDK package to 1.0.12-alpha.
* Use an app group for storage and stop stripping the http from the homeserver when configuring the service.
* Rename access token to restore token.
* Remove matrix.org server description inline with latest FTUE changes.