[LLM] MCP Experiment

- https://devblogs.microsoft.com/blog/microsoft-partners-with-anthropic-to-create-official-c-sdk-for-model-context-protocol
- https://github.com/modelcontextprotocol/csharp-sdk/
- https://modelcontextprotocol.io

![Image](https://github.com/user-attachments/assets/cd5f9c55-5ce8-434b-88c1-b84a80bad612)

Waiting for this PR:
https://github.com/CommunityToolkit/Aspire/pull/625