- Introduced a new template file 'review copy.tpl' for the order summary step in the one page checkout process.
- The template includes a loading indicator and a header for the order summary section.
- Conditional rendering based on customer registration status is implemented.
- Created main module file `customfeaturetab.php` to manage product tabs based on feature values.
- Implemented database installation and uninstallation methods to create necessary tables.
- Added admin controller files for handling redirects and admin functionalities.
- Introduced AJAX functionality in `admin.js` for dynamic feature value selection based on selected features.
- Included temporary query script for testing feature values.
- Added language support for the module with Polish translations.
- Created necessary view files and JavaScript files for module functionality.
- Added logo image for the module.
