Code folding for extended languages

[jtlandis]

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• [X] Completed

Describe the feature

Hello Zed devs! I'm loving my experience with Zed so far!

I was wondering how we would implement code folding for zed for extended languages?

Is this specified by the LSP, or is this something that could be handled with tree-sitter and some @collapsable capture group?

If applicable, add mockups / screenshots to help present your vision of the feature

No response