Reusable toml files for dev and deployment in server

[HellFelix]

The server uses trustauth as a dependency only for testing. When deploying, the Dockerfile (rightly) doesn't COPY rustsystem-trustauth.

It's currently listed as a dev-dependency, but compilation still fails because it doesn't exist in the containerized namespace

[HellFelix]

The workspace toml files are currently split up due to the same reason (workspace members are only copied as needed). There might be a more elegant way of doing this.