[docker] Add a way to run LangStream components in docker as a deamon

[eolivelli]

Currently when you run "langstream docker run" the docker container is ephemeral and it is deleted automatically.

We can go one step further and provide a way to fully run all the langstream components in a deamon and stateful container.

Key points:

• allow to run the docker image as a "deamon"
• allow to persist the metadata to some non ephemeral storage (like a Cassandra database)
• allow to fully handle the lifecycle of more then one application from the control plane