jellyfin-smartplaylist-plugin

Enhanced user-specific data handling in the SmartPlaylist plugin by adding validation for UserId and implementing fallback methods for user data. Introduced new methods to extract audio languages, people, and artists from media items, improving data management and performance. This refactor streamlines the codebase and prepares for future feature enhancements.

Refactored SmartPlaylist plugin by removing deprecated methods and properties related to user-specific data handling. Updated the expression engine to consistently utilize user IDs and improved clarity in the codebase. This cleanup enhances maintainability and prepares for future feature expansions.