Support YYYY-MM-DD date format option

Add support for ISO 8601 date format (YYYY-MM-DD) as an alternative to current date display options. This internationally recognized format is widely used in technical documentation, databases, and global applications.

This would benefit international users, developers, and organizations that require standardized date formatting for consistency with their existing systems and documentation.

Value: Improves international compatibility, reduces date confusion across different regions, and provides better integration with technical systems that expect ISO standard formatting.