docs: add seo

[Barbapapazes]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

This add some basic SEO (waiting for a more moderne documentation with Nuxt UI to improve it more).

I will make another PR to add description to each page.

There is some bug I need to upstream to Nuxt SEO. In the schemaOrg config, the key name is no known and the key logo does nothing. https://nuxtseo.com/schema-org/guides/quick-setup#setup

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[pi0]

Thanks! Would you mind to rebase it against the new UI pro branch? (#1961)

[Barbapapazes]

Thanks! Would you mind to rebase it against the new UI pro branch? (#1961)

I will make another PR to use unjs/docs package and SEO will come for unjs/undocs#5.

[pi0]

Okay added to todo list for #1961

(closing only because there are too many open PRs..)