[Feature] - Add more agent examples to rogue

## This is an ongoing issue.

**Describe the solution you'd like**
Currently, we have only a few examples, all of them for a t-shirt store agent under different agent SDKs (adk, langchain).
We should add more examples for other agent use cases, ideally using different agent SDKs (like Pydantic AI).

Each example we add should be executable using the `--example` flag in `__main__.py`