Allow reuse of containers started via DevServices

[Sanne]

Description

Testcontainers is able to keep containers running for longer & yet manage their lifecycle in a practical way, to allow reuse across multiple runs.

This feature is "opt-in" by the end users so shouldn't have side effects, but we also need to allow on each specific start.

I've experimented with it with the Oracle service, and it works beatifully for workflows in which one runs a "mvn verify" multiple times, as opposed to when using dev-mode (in which case this is not necessary as we already keep the containers running).

Implementation ideas

No response

[quarkus-bot]

/cc @stuartwdouglas