Implement the feature to collect the numbers of virtual attendees #84
Description
It is useful for different user groups to see some virtual attendee numbers:
- For attendees: They should see how many people are watching currently in the room.
- For organizers:
- They should be able to get a CSV with the attendees participating in a session and at what times.
- Additionally organisers should see some basic numbers in an overview, e.g. total users of a stream, different stream views
Propose a solution to this user story and implement it.