Support for template strings in JSX expressions in MDX?

[karlhorky]

Potentially similar to #37

It would be great to be able to use language identifier comments inside of curly brace JSX expressions inside of MDX:

{/* css */`
  em { color: red }
`}

On the MDX side (left side):

1. The first CSS code inside of the code block is syntax highlighted
2. The subsequent CSS code in the tagged template strings are not syntax highlighted

Originally I reported this to the MDX VS Code extension:

• Syntax highlighting of other languages inside tagged template strings and commented template strings mdx-js/mdx-analyzer#484

But it appears that this is not work to be done on their side, but rather on the side of extensions which add the syntax highlighting to commented and tagged template strings, including this extension and also others:

• lit-html VS Code Extension
• Styled Components VS Code Extension
• SQL tagged template literals (syntax only) VS Code Extension

What would be involved in implementing this in the Comment Tagged Templates VS Code extension?