Update Fullstory Connector to send custom segment data and user level info including user_ids from identify() function

[Annika-Spatz]

Hi!

Thanks so much to the person who created a first version of the Fullstory connector! I got really excited to see this happening.

Since Fullstory has a robust user identification function I was wondering if the connector could get improved to be able to sync segment/event data on a user level. I am not a developer and quite far from knowing what to do to add those capabilities myself so I wanted to express my idea and open this issue. (:

Thanks so much for everybody who is a genius and contributing to this amazing solution for so many of us!