GEOMESA-270,269,254 Improve ingest in geomesa-tools,

* Fixed up csv parser in SVIngest so that quotes are not requried
  around geometry field, updated readme.
* Ingest command now splits up into subcommands per format.
* Added dependency CsvReader for tsv/csv parsing
* Added back lat/lon field csv/tsv ingest method for adding point data
I would revert a lot of the changes in here that are related to spacing, since it'll just cause future merge conflicts.