Add code to convert link / node tables into highway network

[gregmacfarlane]

This is work I have locally for matsim; will move into the BEAM codebase

[gregmacfarlane]

Completed in 0e7669c; The main method takes three arguments:

• a path to a nodes CSV table with three columns: id, x, y in lat/long.
• a path to a links CSV table with the following fields:

    /**
     * Read the network links information
     * @param linksFile A csv file containing the following fields:
     *                  - link_id,
     *                  - Oneway,
     *                  - Speed (free flow),
     *                  - DriveTime (minutes)
     *                  - Length_Miles (miles)
     *                  - RoadClass (text)
     *                  - AADT (count)
     *                  - start_node
     *                  - end_node
     *                  - ft (hcm definition)
     *                  - lanes
     *                  - sl (miles per hour)
     *                  - med median treatment
     *                  - terrain
     *                  - capacity (vehicles / hr)
     */

• A coordinate projection system for the output highway network, e.g. EPSG:26912 for NAD83 Utah North (m).