Enhancement Request - Set Prometheus Endpoint Listener Address in UI

[zkhcohen]

Instead of having to manually modify the listen_addr in /usr/local/etc/crowdsec/config.yaml, it would be nice to be able to control the listening address for the Prometheus metrics endpoint exporter.

In my setup, my Prometheus server runs in a container on a specific subnet, and exposing 127.0.0.1 doesn't allow it to hit the /metrics endpoint.

This capability already exists for the LAPI endpoint via the UI.