GEOMESA-72,224,225 Geomesa-tools

Refactor of Ingest command to support CSV/TSV files with WKT geometries.
Tools for export, explain, create, delete, and list features
is this file the final file that the user is expected to receive? If it is, perhaps better to have user specific output directory (or create something in the current working dir)...If it is truly a tmp file it may be good to using something similar to java's ```File.createTempFile``` and then ```tempFile.deleteOnExit``` to ensure it gets cleaned.