Add "JavaScript Standard Style"

[ffes]

In https://github.com/editorconfig/editorconfig/issues/331 the websites https://standardjs.com/ and https://github.com/standard/standard are mentioned.

Not sure how broad that is supported by the general JavaScript community, but at least worth taken a look at.

My first impression is that all we can take from is the first line in "The Rules"

indent_style = space
indent_size = 2