FEATURE: Write geoFind route for drops to find all drops within the search radius

Add routes to find drops and users within a specific radius for displaying your feed.

Also adds `latest_access_location` to users for #19 which will allow us to find nearby users or just stats about who is around.
If you don't provide a string it always goes to `index.js` for module importing. That's why you can just give a folder name as well. This is just going back to the root (so it loads the root project's `index.js` file)