Franz Höpfner

This add support for local Swift packages in Xcode 15 and solves #1396

In the Github Packages example the action [docker/metadata-action](https://github.com/docker/metadata-action) is used to prepare the tags and labels for the docker image. Maybe we could substitute our [manual prep step](https://github.com/metricq/metricq-python/blob/master/.github/workflows/docker.yml#L20-L45) with this...

Provide: - last loop error - queue states Maybe more