For apps that run in the backgroun without interaction, pass this info
to the authenticator.
This can be used to avoid sending unnecessary webflow or basic auth
request, but those were already silenced by FlatpakTransaction. However
this also allows the authenticator to avoid doing direct, native user
interaction which was otherwise not avoidable.
This adds a new way for authenticators to trigger interactive authentication
in the client for simple user/password dialogs. These are not recommended
to use as a webflow is often better. However, for OCI remotes that
use http basic auth this is useful and allows the CLI experience to work
with that.
This adds the remote uri, and the per-ref commit id, as well
as extensible per-ref and per-request dicts we can add stuff to
as needed.
These will be used for the OCI case.
