If you are interesting in doing this, I recommend you subscribe to the
councilroom development mailing list (uber low traffic) and send a mail noting your interest. David Lu, who implemented all the goals stuff and seems interested in continuing development, reads emails there but doesn't read the forum much.
I've been kind of burned out on dominion and dominion coding, but councilroom could reasonably easily support goko.
1) It would require writing a scraper for the goko logs at
http://dominionlogs.goko.com that periodically checks for new logs and downloads them.
2) Then it would require a parser that writes parsed logs in the format councilroom understands (parse_game.py does the work for iso, which is much more complicated, but you can get a feeling for the format from either reading the unittests or just running the parser and examining some logs).
3) Then it's a small bit of work to make the log importer also read from whereever it writes the goko parsed output.
4) And then you'd need to update the card data file for dark ages (modify the csv, then also convert it to json for the frontend).