chore: remove Codesandbox CI

[joshuaellis]

Why

• I don't think I see the value in this anymore now all our examples are hosted in one place it also never builds all the examples and they don't reply on their repo.

What

• Removes codesandbox ci
• Removes VScode settings

Checklist

• Ready to be merged

[changeset-bot]

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Latest commit: a99aa63

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