Typescript Support

[canadaduane]

This is so cool! Markdown as a host document for languages is such a great way to make Literate Programming work for both humans and AIs :D

I'm trying to make this extension work with typescript, but am currently running into a wall. I think the right language selector is ".ts", is that right?

Here's what I'm trying:

```{.ts file=src/hello.ts}
type Greeting = "hello" | "hi"
\```

If I replace ".ts" with ".js" it seems to do syntax highlighting in js ok.

[canadaduane]

Just an idea, but https://volarjs.dev/ might be a nice base for building an extension that includes typescript support. Leaving this here in case it's useful to you or visitors.