feat: use Rspack to compile document & support data fetch and ssgByEntries for ssg

[yimingjfe]

Summary

This PR mainly optimizes Document and SSG in the following ways:

1. Compile ⁠Document.tsx using Rspack, ensuring that ⁠Document.tsx and the project code are compiled by the same bundler.

2. Simplify SSG implementation logic by directly calling functions to trigger SSG rendering during build time, instead of sending requests.

3. Enhance SSG's data fetching and dynamic routing capabilities.

4. Add the ssgByEntries configuration for entries.

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Checklist

• I have added changeset via pnpm run change.
• I have updated the documentation.
• I have added tests to cover my changes.

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Latest commit: 3c8c876

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