Extract Scheme and Racket language support into extensions (#10442)

Release Notes:

- Extracted Scheme and Racket language support into extensions.

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Co-authored-by: Marshall <marshall@zed.dev>
253aa28375Max Brunsfeld committed on 4/11/2024, 7:45:46 PM· committed by GitHubparent165d6b9
31 files changedLine totals unavailable