GitLab

- Add orig_model_list parameter to maintain original model data
- Deep copy model_json and pipe.model_list to preserve data integrity
- Update json_md_dump function call to include orig_model_list
- Improve condition check for empty model_json

- Update model download instructions for versions 0.9.x and later
- Simplify demo scripts by removing unnecessary model configuration
- Add visualization function to draw bounding boxes
- Update CLI help message with new URL