Ability to measure and categorise data consumption

[marcoherbst]

The task currently on my mind is to measure (and cap) the consumption of requests via our API users to ExNVR/Camera.
e.g. 20GB / Month limit for Additional API requests.

This implies being able to distinguish between requests from Evercam Dashboard or Grafana or API or other sources. (Or distinguish per API ID/Key).

This issue may belong better in evercam-backend