Enhance logging and configuration for YouTube Video Classifier

- Added fallback model configuration in config.ini
- Updated requirements.txt to include rich for enhanced logging
- Refactored script.py to implement rich logging for better visibility
- Modified functions to include channel link extraction and updated CSV saving logic
- Improved error handling and user feedback throughout the script

config.ini

@@ -4,6 +4,7 @@
 # Ollama settings
 ollama_host = http://localhost:11434
 ollama_model = qwen2.5vl:7b
+ollama_fallback_model = gemma2:2b
 
 # File paths
 classifications_csv = video_classifications.csv
@@ -22,4 +23,8 @@ restart_tab_frequency = 90
 enable_delete = false
 enable_playlist_creation = false
 
+# LLM timeout settings (in seconds)
+llm_primary_timeout = 60
+llm_fallback_timeout = 60
+