No option for single quotes in snippets

Quotes are hardcoded as double quotes in js.snippets, with no option to use single quotes unless you edit them afterwards, which removes a lot of the utility of the snippet.

Would be a lot better if you could configure which quote style you prefer on a per-language basis (not globally as many languages make a distinction). Ideally builder could parse eslint/tslint configs for the relevant rule if it exists.