perf(content-list): cache contents list during generation and per-request

[farnabaz]

🔗 Linked issue

resolves #2449

❓ Type of change

• [ ] 📖 Documentation (updates to the documentation or readme)
• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [x] 👌 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

The bottleneck in the pre-rendering phase is getting contents list from file system. By caching the list in the pre-render process, the generation time will drop significantly.

This change reduce the generation time in Content docs from 15s to 5s on my machine

📝 Checklist

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

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[manlm]

may i ask when will this be released

[atinux]

@manlm you can use the edge channel to use it today: https://content.nuxt.com/get-started/edge-channel

Release should be next week