feat: main doc build config content using rsbuild

[caohuilin]

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• [ ] 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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⚠️ No Changeset found

Latest commit: 5233c7150d5111b7f2fc4bfcd1cf42d93d50daac

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