support spring boot's `ServiceConnection` mechanism

[joshlong]

basically, spring boot can automatically during development create a connetion to a running docker image or to a testcontainer, allowing the user to avoid having to specify all this in application.properties during development. even better, the spring initializr can generate docker compose.yml definintiions and Testcontainers definitions for tests that point to a docker image. the result is the user goes to start.spring.io, chooses, eg, PgVectorDB, and one or both of Testcontainers or Docker Compose, and they get a compose.yml and Testcontainers tests ready to go. Even better, whrn they run their spring boot app they don't need to specify connectivity credentials in application.properties.

[eddumelendez]

Hi Josh, Testcontainers Service Connection support is already there for Ollama, ChromaDB, Milvus, Qdrant and Weaviate. See https://docs.spring.io/spring-ai/reference/1.0-SNAPSHOT/api/testcontainers.html#_service_connections

[eddumelendez]

For Docker Compose, see #733

[eddumelendez]

This can be closed now that Testcontainers and Docker Compose are supported. BTW, the support for those will come to start.spring.io in this PR. PgVector and Neo4j are already supported.

[markpollack]

Thanks for the contribution @eddumelendez !!