Used to publish route file from adapi

1. Download route file [maybe here]
2. Edit route_file_loader.py and replace the path to route_file with your /path/to/route/file
3. dont forget to source your autoware folder.
4. Run python route_file_loader.py
5. If you want to load another route file, please first run route_file_clear.py before executing route_file_loader.py

If you want to load another route file, please first run route_file_clear.py before executing route_file_loader.py