OptionLike and ResultLike

Define your own Option-like and Result-like enum types. Avoid to reimplement everything of option and result for your own enums.

Option example ```rust use resultlike::optionlike;

// Simple case with single argument name to use Some and None option_like!(MyOption);

let v = MyOption::Some(1); // every option utilities are possible including unwrap, map, and, or etc. assert!(v.unwrap() == 1);

// convertable to option let opt = v.into_option(); assert!(opt == Some(1));

// pub enum with custom names instead of Some and None option_like!(pub Number, Value, Nan);

let v = Number::Value(10); assert!(v != Number::Nan); ```

Result example in same way ```rust use resultlike::resultlike;

// simply, result_like!(pub(crate) MyResult);

// customizing, result_like!(Trial, Success, Failure); ```