feat(nuxt): allow programmatically prefetching global components

[danielroe]

🔗 Linked issue

nuxt/nuxt#14584

❓ 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 like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

This adds a new hook (components:prefetch) that allows prefetching of global components (Pascal case required, to avoid runtime addition of scule utility). We could also expose a utility like nuxtApp.prefetch or standalone prefetchComponent that uses this hook under the hood.

This PR exposes new preloadComponents utility that allows prefetching of global components (Pascal case required, to avoid runtime addition of scule utility).

Also an alias prefetchComponents is exposed which does same as preloadComponents but as we progress to make better implementation based on manifest maps, users can already opt-in to use semantically write utility.

📝 Checklist

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

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[pi0]

LGTM. As discussed with @danielroe we should iterate over this to make use of build manifest to generate actual <link> tags and also implement server-side rendering hints (currently not needed with #6876)