Deployment fix

• Fix: Remove development files from release package
• Fix: Clean up files included in WordPress.org deployment

The Christmas Resurrection

• Major: Complete rewrite of the plugin
• Modern PHP 7.4+ features and type safety
• Improved code organization and maintainability
• Updated minimum WordPress version to 6.2.4
• Better error handling and version compatibility checks
• Added comprehensive test suite with unit and integration tests
• Added theme installation and management functionality
• Added proper WordPress coding standards compliance
• Added proper query handling for Screenly Cast content

Port over old release

• Added PHPUnit test files for wordpress.