docs(api): add defineNuxtComponent utils

[Krutie]

🔗 Linked issue nuxt/nuxt#13653

❓ 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

Added API documentation for defineNuxtComponent utils

📝 Checklist

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

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[darthf1]

Is it possible to keep one import statement for users who want to explicitly add the import?

Example for other import:
bea83e9

[pi0]

@darthf1 Sure. You can always explicitly import from #imports instead of using auto imports.

[pi0]

@danielroe would you mind to do a quick review?

[pi0]

Thanks @Krutie as always you rock!