.NET: [Feature]: Ability to Mix .NET and Python agents

[codehippie1]

Description

There should be samples in the repo to show.

1. How to use .NET Agents in a Python heavy implementation. E.g orchestration done in Python, which uses .NET and Python Agents and graceful agent handoffs.
2. How to use Python agents in .NET implementation. E.g orchestration done in .NET, which uses .NET and Python Agents and graceful agent handoffs.

This is required because some agents are only available in one language. E.g Claude CLI agent is only available in Python.

Code Sample

Language/SDK

Both