[integration]Google-adk with OPIK

[lucifertrj]

• Added a Google ADK example that shows how to trace an Agentic RAG workflow with Opik
• Demonstrate a router agent that chooses between local PDF retrieval using Qdrant vector engine and web search based on the user query

[LeoRoccoBreedt]

Hi @lucifertrj , thank you very much for your contribution!

We just updated our contribution guide and standardised our example addition pattern - could you review and apply the changes to your example please 🙏 I'd be happy to review the example once done!

I also wanted to find out if this type of example is something you put together specifically for this repo or if you've used a similar pattern for your own agent development? Do you use Google ADK often?

[lucifertrj]

Sure, I will go through the updated contributing guide.

Yes, I use Google ADK quite often and have also used it in my talks. For my own agent development work, I have used LangGraph extensively as well. This example was added specifically for this repository.

[LeoRoccoBreedt]

Thanks then! Appreciate the contribution.