Add TypeScript Support

[runspired]

any chance of getting some types, even if just bare bones d.ts? :D

[elwayman02]

This is something I want to do, but I can't give a timeline on it. Might be months before I'm able to get to it. Would happily review PRs integrating TypeScript dependencies or adding some types. Iterative progress is totally ok, and any PRs that get us closer mean it's more likely I can devote small amounts of time to it myself.

[cloke]

Would the goal be to convert to typescript or to just export definitions. I have a definitions file I will PR once the v2 add-on stuff is done. Looks like a full conversion to TS wouldn't be a huge lift and can look at that as well.

[elwayman02]

I think long-term goal is full conversion, but any steps that get us closer are a good thing!

[cloke]

Full conversion doesn't look to hard. Once the v2 add-on is done I'll just convert to ts fully. Just don't want lots of moving parts at once.