Prometheus metrix support

[ilarimikkonen]

Is your feature request related to a problem? Please describe.
When running in Kubernetes environment, it would be cool to have Prometheus support. Right now the heath API seems to be the only way about this

Describe the solution you'd like
Expose Prometheus metrics.

Describe alternatives you've considered
Build an Exporter

Additional context
nah.

[c0c0n3]

@ilarimikkonen thanks for the suggestion. This feature could be quite useful actually.

Design note. We could implement this relatively easily since we have telemetry already. To avoid impacting QL operation, we could have a separate process import the CSV generated by Telemetry into Prometheus. This way the whole import process can even run in a separate pod which would be ideal from a performance standpoint.

[github-actions]

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