Fixes #2835.

This PR adds a new feature to display JSON paths in HTML result generated by Spectral.
It introduces a new CLI option --html-include-json-path that, when enabled, shows the JSON path for each reported issue in the HTML output, making it easier to locate and fix issues in large documents.

Checklist

• Tests added / updated
• Docs added / updated

Does this PR introduce a breaking change?

• Yes
• No

Screenshots

• HTML format result with --html-include-json-path true

• HTML format result without flag

Changes

• Added --html-include-json-path CLI option (default: false)
• Created HtmlFormatterOptions type to support HTML-specific formatter options
• Modified HTML formatter to include JSON paths when requested
• Updated HTML templates to add a column for JSON path display

Additional context

This enhancement improves the HTML report's usefulness by providing clear location information for each validation error through JSON paths. When diagnosing issues in complex API definitions, knowing the exact JSON path makes troubleshooting significantly faster.

The implementation uses the existing printPath utility from @stoplight/spectral-runtime to format paths in dot notation style. The JSON path is only included when specifically requested via the CLI option, maintaining backward compatibility with existing usage.