NPS Scoring of the Creator Hub

Implement an NPS scoring system for the Creator Hub, to allow users to provide feedback and rate their satisfaction level.

NPS: Net Promotor Score, is a pretty standard metric used to determine how likely a user of our product is likely to become a "promotor" and recommend it to others

We should randomly prompt users to provide a scoring.
- We should make sure this is not too invasive, as it can otherwise be annoying
- We should not prompt new users, only users that have used the product enough to form a useful opinion
- On the other hand we should not prompt too late, as that will lead to selection bias (as only the people happy w the tool will stick around the longest)

We should evaluate if there's some existing plugin we can use, as this is a common requirement, or if we should build it from scratch.