feat: add filterXSSWithResult to return removed elements

[leizongmin]

🎯 Changes

1. New filterXSSWithResult Function

• Introduce filterXSSWithResult function that returns an object { html: String, removed: Array }.
• The removed array contains detailed information about ignored tags and attributes.
• Records removed tags with type "tag", tag name, HTML content, and isClosing flag.
• Records removed attributes with type "attr", tag name, attribute name, and attribute value.
• Preserves user-defined onIgnoreTag and onIgnoreTagAttr hooks while recording removals.

2. Documentation Updates

• Update README.md with usage examples for filterXSSWithResult.
• Update README.zh.md with Chinese documentation for the new function.

3. Testing

• Add comprehensive test suite in test/test_filter_xss_with_result.js.
• Tests cover removed tags, removed attributes, clean HTML, mixed dangerous inputs, user hook preservation, and options object immutability.

💡 Technical Highlights

• Detailed Removal Tracking: Provides granular information on what was removed during XSS filtering.
• Backward Compatibility: Integrates seamlessly with existing onIgnoreTag and onIgnoreTagAttr hooks.
• Comprehensive Testing: Ensures robustness and correctness of the new functionality across various scenarios.