Monitor website usage analytics

[tales-aparecida]

In order to track adoption, we need a Grafana dashboard estimating how many users are interacting with the dashboard, and what they are doing.

This is standard website usage analytics, so take into consideration any GDPR implications, and possible usage of frameworks.

[tales-aparecida]

That reminded me about #596

[bhcopeland]

Worth noting kci-dev has user-agent added a few months back: kernelci/kci-dev#265

[tales-aparecida]

This ticket relates to #1755, but differs in that this ticket is about tracking user requests (who is doing what), where 1755 is about tracking page responses (how long they take to load, and how often there's an error).

[tales-aparecida]

I think we are not exporting the metrics I had in mind. I have a vague memory we had them in the previous Grafana/Prometheus deployment, but I might be mixing what we have in CKI.