Create function to calculate distance to nearest tunnel

[aweinert-MIT]

Create a python 3.x function to calculate the distance between a set of images and national tunnels.

• Inputs either a N X 1 imagery UUID or an image itself
• Calculate the distance, in units meters, between the latitude, longitude metadata of the image and all nearby tunnels.
• Output a N X 4 column of UUID, image latitude, image longitude, distance to nearest tunnel, UUID of nearest tunnel

setup.sh will needed to be updated to download USDOT: National Tunnel Inventory Data. A default data directory titled /data/USDOT-Tunnels should be created to store the data.