New JSON Path file, SQL table definition and migration script for com.snowplowanlaytics.snowplow geolocation_context 1-1-0

[alexanderdean]

*Migrated from: * snowplow/snowplow#2864

I noticed the new 1-1-0 schema includes the timestamp from the geo location API. However we don't have a migration script, table def or JSON path file to make use of it in Redshift. Currently just:

JSON Schema
https://github.com/snowplow/iglu-central/blob/master/schemas/com.snowplowanalytics.snowplow/geolocation_context/jsonschema/1-1-0

JSON path
https://github.com/snowplow/snowplow/blob/master/4-storage/redshift-storage/jsonpaths/com.snowplowanalytics.snowplow/geolocation_context_1.json

Table definition
https://github.com/snowplow/snowplow/blob/master/4-storage/redshift-storage/sql/com.snowplowanalytics.snowplow/geolocation_context_1.sql

Would you guys be open to a pull request for 1-1-0 files? We've started collecting fine locations as part of a split test and will be writing these ourselves anyway.