v4.1.1-preview-240719-1

During authentication not all available information is stored in the user identity/the service principal. Normally ASP.NET stores the full authentication result (AuthenticateResult) in a feature via HttpContext.Features. This PR adds support for storing the authenticate result in the HttpContext. This should promote maximum compatibility with other authentication/authorization middleware designed to use these features.

The AuthenticateResult is also stored in the FunctionContext.Features for ease of use.