Supports Prism highlighting in Astro projects

This package exports a component to support highlighting inside an Astro file. Example:

---
import { Prism } from "@astrojs/prism"
---

<Prism lang="js" code={`const foo = 'bar';`} />

This package exports a runHighlighterWithAstro function to highlight while making sure the Astro language is loaded beforehand

import { runHighlighterWithAstro } from '@astrojs/prism';

runHighlighterWithAstro(`
  ---
    const helloAstro = 'Hello, Astro!';
  ---

  <div>{helloAstro}</div>
`, 'astro');