Features:
- Added OUTPUT_NODE for real-time image preview
- Implemented Browse button with JavaScript widget
- Enhanced path input with placeholder and default value
- Updated README with new feature documentation
Changes:
- random_image_picker.py: Added OUTPUT_NODE, improved INPUT_TYPES
- web/random_image_picker.js: New custom widget for file/folder selection
- README.md: Updated documentation with new features
- .gitignore: Added web directory ignore patterns