Add more support for AuthorizeAttribute

[Jack-Edwards]

Couple of limitations with regards to customizing the AuthorizeAttribute:

• Cannot provide Roles due to IAPI0002
• Cannot provide AuthenticationSchemes due to IAPI0002

Regarding the AuthenticationSchemes, I would like to be able to accept Basic authentication in exchange for a JWT. JWT Bearer authentication would be accepted by all other endpoints.

AuthenticationSchemes Example

public sealed partial record GetTokenQuery();

[Handler]
[Tags("Auth")]
[MapGet("/auth/token")]
[Authorize]
public static partial class GetTokenHandler
{
    private static readonly string[] AuthenticationSchemes = ["Basic"];

    internal static void CustomizeEndpoint(IEndpointConventionBuilder endpoint)
        => endpoint.RequireAuthorization(new AuthorizationPolicy(new List<IAuthorizationRequirement>{ new DenyAnonymousAuthorizationRequirement() }, AuthenticationSchemes));
    
    private static ValueTask<Ok<TokenResponse>> HandleAsync(GetTokenQuery query, ClientAuthorizationService clientAuthorizationService, CancellationToken cancellationToken)
    {
        var token = clientAuthorizationService.CreateToken("foo");
        return ValueTask.FromResult(TypedResults.Ok(token));
    }
}