Pure Value Matches #758

Idea to think about:

• currently you always have to provide a Func even in simple cases where you return only a value in each case:

Example:

        => validationResult
            .Match(notValidated: _ => HttpStatusCode.BadRequest, valid: _ => HttpStatusCode.OK, invalid: _ => HttpStatusCode.BadRequest);

And this would allow code like this:

    private static HttpStatusCode ToStatusCode(this DataValidationResult validationResult)
        => validationResult
            .Match(notValidated: HttpStatusCode.BadRequest, valid: HttpStatusCode.OK, invalid: HttpStatusCode.BadRequest);

Possible Strategies:

• Either everything is a func or everything is a value. (Above)
• Allow Values only in cases where there is an empty class provided. (Like Option)

Pro:

• simpler code in a few cases
• Similarity to Option

Contra:

• could lead to overload problems