Implement SCORM to DOCX reverse conversion

[arolos]

Summary

Implements the reverse conversion process from SCORM to DOCX, mirroring the existing DOCX to SCORM workflow. This includes two new API endpoints and fixes for various parsing and formatting issues.

Changes

New Features

• ScormToJson API endpoint: Converts SCORM ZIP files to JSON format
  • Extracts and parses questiondb.xml and imsmanifest.xml
  • Populates Django models from SCORM XML structure
  • Returns JSON in the same format as WordToJson endpoint

API Endpoints

• POST /api/scorm-to-json - Accepts SCORM ZIP file, returns JSON
• POST /api/json-to-docx - Accepts JSON data, returns DOCX file