[WIP] Create a weather mcp server in .Net C#

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original issue description:

I want to create a weather MCP server built from the weather api minimal api example of .Net 9 in C#

steps:
[ ] Create the minimal api with weather example
[ ] Use ModelContextProtocol nuget to implement a mcp server (use pre release) https://www.nuget.org/packages/ModelContextProtocol
[ ] Add same functionality for the api call for the mcp call
[ ] Add a unit test for both the API call as the MCP call. use XUnit to test it
[ ] Add a .http file for restclient testing of both the API as the MCP server
[ ] Make sure all test succeed and builds work
[ ] refactor any code that is duplicated between the rest api call and MCP call.

Fixes #1.

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[Geertvdc]

please retry @copilot

[Geertvdc]

fixed the dev environment. please retry @copilot