Support retention of state across zillabase start zillabase stop

[jfallows]

Describe the desired outcome from the user's perspective
As devops, I want to be able to restart zillabase without losing state.

Acceptance criteria

• State of services should be consistent before and after zillabase restart
  • risingwave
  • karapace
  • apicurio
  • kafka

Additional context
We can use docker compose volumes, and notify the user on zillabase stop that they are being used.
We may also need an option on zillabase start to clean out any old state first.
Some services that are currently in-memory only may need to be reconfigured to support retention of state across restart.