[WIP] Add Docker Compose server examples

[Snarr]

Adds Docker Compose examples for the following LittleHorse Orchestrator use cases:

• 3 server cluster
• Authentication with OAuth
• Authentication with mTLS
• Using Keycloak iDP
  And more.

[coltmcnealy-lh]

Let's just use the apache/kafka:3.8.0 one since it's now an official image, and it also means you don't need to configure any environment variables.

[Snarr]

Until now I didn't realize the full extent of what an Apache Kafka image release meant. Cool that they are releasing their own images now with built in env configurations!

[coltmcnealy-lh]

We will want to put this in the docs/docs/operations folder so that it shows up on our website rather than just in the examples space. I'm thinking we should have inside the "operations" tab on our website a "docker compose" tab, which has a few examples.

This can be the Basic one. We should also have some others:

• OAuth with Keycloak
• Using Confluent Cloud
• TLS
• mTLS

Each file should also have tutorials for connecting with lhctl and also a Task Worker in Java/Go/Python.

Another interesting example we can add (in addition to the four listed above) is one that has a worker running inside the docker compose on the same network. We'll then have to configure two listeners on the LH Server: 1) inside the docker compose network, 2) outside the docker compose network. I think that would be helpful for people to understand how everything works.