Add a (post-choice) survey to determine who is using Chooser and for what purposes

We would like to know more about the types of people who use the CC license Chooser. E.g., are they artists, academics, publishers, etc.? Where are they located?

Determine how we might allow the communications team to provide a non-invasive exit survey for Chooser users to gain more insights into the tool's use.

The issue names the Chooser and the communications team but no files, tests, or implementation entry points. First clarify the survey audience, questions, consent and privacy constraints with the communications team, then trace the post-choice user flow. Done means an agreed, non-invasive exit-survey approach is implemented and its collected insights meet the stated goals.

Written by the indexing model from the issue text.