Write new RME IGO Attribute Table to CSV within project

[philipbaileynar]

Just talked Alden through the new RME output format (i.e. flattened IGO and DGO tables). We agreed that people want these data in other analysis packages and the easiest way to do this is via CSV. I walked him through exporting the IGO attribute table to CSV and opening it in Excel. It worked. He liked it.

We could document this workflow, but we could also just include the CSV in the RME outputs folder, given that it's going to be extremely useful for folks who want to take the data and perform their own (non-GIS) analysis.

Task

Include the IGO attribute table (with IGO point lat and long as columns) as a CSV in the RME outputs. Make sure this gets referenced in the RME project file and also in the business logic.

FYI @jtgilbert @joewheaton