Functionality to support the geoconnex barn raising https://github.com/internetofwater/geoconnex.us/wiki/geoconnex.us-barn-raising

Will enhance: https://usgs-r.github.io/nhdplusTools/reference/get_flowline_index.html

Will implement function: get_network_address() as in #111

Will implement both HEM-SOE and NHDPlusV2 data-based methods for get_network_address().