insights: Prototype aggregated search results using existing streamed search filters

Created by: chwarwick

This issue is to explore the option of aggregating search results using the search filter that are currently streamed to the webapp.

Successful completion of this issue will include capturing pros/cons of the approach as well as any limitations that could impact the desired outcomes in RFC: https://docs.google.com/document/d/1yLV7MGOEXYT3yPvBxHHm8y2-p737KIrju_QPqlhBYz4