JSDoc typechecking for inline scripts
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At the moment the typechecking enabled in `jsconfig.json` only works for `.js` files.
Scripts inline in html `<script></script>` tags aren't typechecked.

Found some references to this and some open vscode issues that look related:

* https://stackoverflow.com/questions/79769526/is-there-a-way-for-jsdoc-comments-to-be-visible-in-html-files
* https://github.com/microsoft/vscode/issues/26338
* https://github.com/microsoft/vscode/issues/114115