[New] Sample MultiAgent Chapter 8

[leestott]

Description - create new sample for tool use for Chapter 8 using multiagent with serpapi.com

Create a Notebook code sample using one or more (seperate samples) showing what Agentic RAG:

Autogen
Semantic Kernel
Azure AI Agent Service + Semantic Kernel
Resources
A good example of a self-contained notebook:
https://github.com/cohere-ai/cohere-developer-experience/blob/main/notebooks/react_agent_adaptive_rag_cohere.ipynb

How To
Following this example for Documentation and Notebook structure:
https://github.com/microsoft/ai-agents-for-beginners/blob/main/04-tool-use/code_samples/04-autogen.ipynb

[github-actions]

👋 Thanks for contributing @leestott! We will review the issue and get back to you soon.

[leestott]

Added new multi agent sample https://github.com/microsoft/ai-agents-for-beginners/blob/main/08-multi-agent/code_samples/08-python_multi_aiagent_bookinghotel.ipynb