Feature request: Properly format CSS in Style tags

[VeteraNovis]

I regularly make use of <style> tags when working in XSLT, but with this extension, every part of the CSS within the style tags are colored the same.

I'd like to be able to view the CSS with correct highlighting without having to change the VSCode language to HTML

I have tried to implement this myself but I'm new to editing extensions.

[pgfearo]

It may be possible to use VSCode's built-in HTML syntax highlighting for this...further investigation needed.