packages: Add SVAR Core

[olgatash]

🎯 Changes

This is a package submission for Svelte UI library - SVAR Core.

✅ Checklist

• [X] I have given my PR a descriptive title
• [X] I have run pnpm run lint locally on my changes

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Name	Status	Preview	Comments	Updated (UTC)
sveltesociety-dev	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 10, 2024 3:44pm

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