Introduce comprehensive localization capabilities and expanded theme
customization options for the ifnex theme.
- Add Polylang-compatible language switching logic and UI components
- Implement LTR/RTL direction handling based on active language
- Add new Customizer sections for logo management and language settings
- Add localized content support for Hero section and site metadata
- Refactor template files (header, footer, single, front-page) to use
translation functions and dynamic content
- Add support for custom logo images via WordPress Customizer
- Implement new archive template and improved single post layout
- Update CSS to handle English (LTR) mode and language-specific styling
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