chore: update docs to use remix v2

[joshuaellis]

Why

• The website was unable to be upgraded because of it's patch on remix V1. We needed to move to remix@2 with vite to use the MDX plugin & then get that working on vercel (again). In addition there was always (some) issues with stitches and remix, we've moved to vanilla-extract which has been better overall.

What

• updates remix to v2
• removes stitches for vanilla-extract
• updates docs deps

Checklist

• Documentation updated
• Ready to be merged

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Latest commit: 7f4fa88

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Name	Status	Preview	Comments	Updated (UTC)
react-spring	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 26, 2024 6:33pm

[github-actions]

Size Change: 0 B

Total Size: 150 kB

ℹ️ View Unchanged

Filename	Size
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