Add support for template literal in JSX

[patricklafrance]

It would be really nice to have support for template literal in JSX files.

A common use case is when using the "classnames" utility (https://github.com/JedWatson/classnames).

For example: <ul className={absolute bg-white pa3 ${classNames({ dn: !isOpen })}}>

I would expect to get intellisense for the classes absolute, bg-white and pa3.

Thank you,

Patrick

[nghiahung-dev]

@zignd Webstorm supported, do you have any comment for this issue?