chore: add bugs.url package metadata

[wangedmund77-cmyk]

Summary

• adds missing npm support/discovery metadata for eslint-rspack-plugin
• updates only package.json

Metadata added

• bugs.url: https://github.com/rstackjs/eslint-rspack-plugin/issues

Validation

• parsed package.json as JSON after the change
• confirmed the changed manifest still has name: eslint-rspack-plugin
• checked this is metadata-only: no runtime code, dependencies, exports, generated assets, or build behavior changed

This small metadata fix makes the published npm package point users to the project README and/or public issue tracker once the package is next released.

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR updates the bugs field in package.json from a simple string URL format to an object format with a url property. The GitHub issues page link remains the same; only the metadata structure is modified. No dependencies, scripts, or other package configuration are affected.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description is clearly related to the changeset, providing a detailed explanation of the metadata addition, validation steps, and the purpose of the change.
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.
Title check	✅ Passed	The PR title directly and accurately describes the main change: adding the bugs.url package metadata field to package.json.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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