Make QSEoW log data available to Prometheus

[mountaindude]

Is your feature request related to a problem? Please describe.
Once log events have arrived in Butler SOS it's reasonably easy to also expose them on the Prometheus metrics page, from where they can be scraped by Prometheus.

Once in Prometheus the logs can be visualised using Grafana.

The same general scenario is also achieved using InfluxDB instead of Prometheus. The reason why it's still relevant to expose the log events to Prometheus is that it (Prometheus) has more powerful data manipulation features, especially when used together with Grafana, compared to InfluxDB.

Prometheus + Grafana is also a more widely adopted and used combo, compared to InfluxDB + Grafana.
Both variants get the job done though!