Addressed several issues in ARESvis.py:
- Implemented thread-safe GUI updates using pyqtSignals for EPICS callbacks.
- Enhanced function with null checks and value clipping.
- Improved image loading in with file existence checks and logging.
- Refactored to use widget dictionaries, avoiding .
- Cleaned up and methods, removing dead code and using widget dictionaries.
- Updated Python version check to exit on failure.
