docs: rewrite using VitePress

[norskeld]

Resolves #45

[vercel[bot]]

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Name	Status	Preview	Updated
sigma	✅ Ready (Inspect)	Visit Preview	Oct 26, 2022 at 2:17AM (UTC)

[coveralls]

Pull Request Test Coverage Report for Build 3325593551

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 3303216611:	0.0%
Covered Lines:	236
Relevant Lines:	236

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💛 - Coveralls

[github-actions[bot]]

:tada: This PR is included in version 3.1.2 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: