chore: add package support metadata

[YfengJ]

Summary

• add package homepage metadata pointing to the repository README
• add bugs.url metadata pointing to the GitHub issue tracker

Why

This makes the npm package page expose the project homepage and issue tracker directly.

Validation

• node metadata assertion for homepage and bugs.url
• npm view @rsbuild/plugin-pug@latest name version repository.url homepage bugs --json
• pnpm install --frozen-lockfile --ignore-scripts
• pnpm run lint
• pnpm run build
• pnpm run test
• npm pack --dry-run --ignore-scripts --json .
• git diff --check

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 45186cc3-e3f0-4753-8369-1759a08e9812

📥 Commits

Reviewing files that changed from the base of the PR and between 7fb53b9 and 4f31274.

📒 Files selected for processing (1)

• package.json

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📝 Walkthrough

Walkthrough

Two metadata fields were added to package.json: a homepage field pointing to the repository's README anchor, and a bugs object with a url field pointing to the GitHub issues page for @rsbuild/plugin-pug. No other fields or files were modified.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change—adding package metadata fields (homepage and bugs.url) to package.json.
Description check	✅ Passed	The description clearly explains the changes, their purpose, and includes comprehensive validation steps that align with the changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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