Remove the controller grpc service along with associated code related to
sessions or remote controllers.
Data types that are still used with complicated dependency chains have
been kept in the same package for a future refactor.
Signed-off-by: Jonathan A. Sternberg <jonathan.sternberg@docker.com>
We can perform all attestation processing, handling how the sbom and
provenance arguments interact on the client, while applying defaults on
the server.
Additionally, this allows us to start pulling fields out of CommonOpts.
Signed-off-by: Justin Chadwell <me@jedevc.com>