Save Form Submissions to Google Drive

## 🔄 Decision Point: Folder Check
The workflow splits into two paths based on folder existence:
- ✅ TRUE: Use existing folder path
- 🆕 FALSE: Create new folder path

## 🗂️ Existing Folder Path (Upper)
1. Prepare Files for Upload: Splits files for individual processing
2. Upload Files: Uploads to existing folder maintaining structure

## 📁 New Folder Path (Lower)
1. Create Folder: Generates new folder in Drive
2. Prepare Files for New Folder: Splits files for individual processing
3. Upload to New Folder: Uploads to newly created folder