Add Description to ProducesResponseType (and others) for better OpenAPI document creation

[sander1095]

Add Description to ProducesResponseType (and other types) for better OpenAPI documents in Controllers

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• [x] You've included unit or integration tests for your change, where applicable.
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Description

This pull request introduces the concept of adding OpenAPI's description to responses returned by ASP.NET Core. The changes include adding a Description property to response metadata interfaces, classes, and attributes, as well as updating related tests.

As discussed in #55656 , Minimal API's are not (or minimally) addressed in this PR. This should instead be built in #57963 (which I would love to work on in the future!)

Fixes #55656