✅ Add Hugging Face Spaces configuration

🔧 Configuration Fix:
- Added required YAML front matter to README.md
- Set title: Multimodal A/B Test Predictor
- Set emoji: 🚀 and blue to purple gradient
- Configured Gradio SDK with version 4.44.0
- Set app_file: app.py

📁 Added Missing Files:
- model/multimodal_cat_mappings_GGG.json for category mappings
- Complete file structure for Space deployment

🚀 Ready for Launch:
- All configuration requirements met
- Space should build and deploy successfully
- Enhanced dual-AI A/B test predictor ready

README.md

@@ -1,3 +1,14 @@
+---
+title: Multimodal A/B Test Predictor
+emoji: 🚀
+colorFrom: blue
+colorTo: purple
+sdk: gradio
+sdk_version: "4.44.0"
+app_file: app.py
+pinned: false
+---
+
 # 🚀 Multimodal A/B Test Predictor
 
 ## Overview