9673d9be7b
- Added software.php for managing software versions, including download and purchase actions. - Created upgrade_paths.php for handling upgrade paths management. - Developed user_licenses.php for managing user licenses. - Introduced version_access_rules.php for managing access rules for software versions. - Implemented frontend functions in functions.js for interacting with the software upgrade API. - Added version_access.php for user access validation and license management. - Created upgrades.php for displaying available upgrades and handling user interactions. - Enhanced UI with responsive design and progress indicators for downloads and purchases.