Make NuGet packages

[justinyoo]

Please provide us with the following information:

This issue is for a: (mark with an x)

- [ ] bug report -> please search issues before submitting
- [x] feature or new sample request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Expected/desired behavior or new sample request

An MCP server can be released as a NuGet package. Refer to this post: https://devblogs.microsoft.com/dotnet/mcp-server-dotnet-nuget-quickstart/

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