77eceee2f3
- Introduced a new module for progress tracking in the LMS service. - Implemented `calculate_course_completion` function to compute total lessons, completed lessons, and progress percentage for a user in a specific course. - Updated the main.rs file to include the new progress tracking module. - Enhanced the Excel import functionality in the Question Bank to support various question types and improved error handling. - Added a new dependency on the `xlsx` library for handling Excel files in the frontend. - Modified the course settings page to include a branded certificate template with additional organization details. - Updated the package.json and package-lock.json files to include the new `xlsx` dependency. - Changed the default state for ingestRag in the Admin Shared Materials page to true.