Add Groovy container w/ examples and Redpanda

[jjbrosnan]

We're adding Kafka Groovy docs, so having this to link to will be helpful, even if it's basically identical to the Python one.

[jjbrosnan]

This PR now not only adds a Groovy-examples-redpanda docker compose deployment, it also adds:

• A Python + Redpanda deployment without examples
• A Groovy + Redpanda deployment without examples

It also removes any docker-compose shell commands in favor of docker compose v2 syntax, docker compose.

[jjbrosnan]

I should also mention this removes our All-AI deployments, as we decided to no longer publish those images.

[devinrsmith]

Couple of comments that I think apply to a lot of files - didn't repeat the advice for every single file though...

[devinrsmith]

I think we should adopt the formatting style redpanda uses for this:

    command:
      - redpanda
      - start
      - --kafka-addr internal://0.0.0.0:9092,external://0.0.0.0:19092
      - --advertise-kafka-addr internal://redpanda:9092,external://localhost:19092
      - --schema-registry-addr internal://0.0.0.0:8081,external://0.0.0.0:18081
      - --smp 1
      - --memory 1G
      - --mode dev-container

I've modified this from https://docs.redpanda.com/current/get-started/quick-start/; we should test it in all of the different compose files to make sure it works. Do we use the schema registry for any of our examples?

[jjbrosnan]

I don't think we do. I've made updates that make our syntax consistent with Redpanda and tested it to make sure it works with the examples in our Kafka documentation.

[devinrsmith]

I don't think we're consistent w/ the redpanda quickstart - they use internal and external, and use dev-container.

[devinrsmith]

See item I re-opened.

[devinrsmith]

Assuming you've run these examples successfully, LGTM.