feat(FormField): add multiple fields support

[edimitchel]

🔗 Linked issue

Resolve #5503

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality)
• ✨ 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

In order to support multiple fields inside one form field (for field working together, i.e. time and its unit), this PR add the possibility to pass a list of name in form field. This will ask to add manually name to field to track state.
As a result, errors of each fields would appear in the form field area. Check playground example.

📝 Checklist

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

[pkg-pr-new]

npm i https://pkg.pr.new/@nuxt/ui@5515

commit: 0a799bd