Scala Common Enrich: make referer parsing configurable with list of internal domains

[alexanderdean]

Should be configurable with an array string of the internal domains used to identify internal referers.

This is a four step process:

1. Define JSON Schema for the new enrichment
2. Update the existing referer parsing code to be a configurable enrichment in the new registry
3. Java & Scala: add configurable list of domains which should count as "internal" snowplow-referer-parser/referer-parser#18
4. Integrate updated version of referer-parser into Scala Common Enrich and activate the new functionality

Ask Alex for guidance when you get to step 3 above. 1 and 2 should be uncontroversial.

[alexanderdean]

Fixed in 0.9.6, closing