Language select list widget - setting has no effect

Committed with credits in the issue. Thanks.

The patch became much bigger when testing:
- adding defaultSettings();
- encapsulating the value formatting in one function, both for formatter and widget.

Icons are still not supported in widget. I guess that is not possible, since select widget supports only a ascii string?

Thanks for quick commit and refactoring the code.

Yeah, icons might be difficult in select list.

Maybe like this: https://developer.mozilla.org/en-US/docs/Learn_web_development/Extension...

Or maybe using Unicode emoji flags, like so: https://gist.github.com/chrisjonesio/2f693fd9853c5450345e18c836577393

But that surely is a bigger feature request. Maybe if I find the time ... The unicode emoji flags seem like an interesting thing more generally. Like having a service or library that returns you the flag emoji if you pass ISO 3166 code or something like that.

Thanks, I created
✨ Add lanuguageicons to Widget values Active
and
✨ Add SelectWidget formatting options to AutocompleteWidgets Active

Please confirm if current codebase deserves a new version, of if you think it needs a bit extra