Draft: proxy: Expose Prometheus metrics
Allow exposing metrics over a Prometheus-targeted endpoint with a CLI flag to configure the listening address (for cases like running outside of Docker)
The core part of this is from #40121 (closed)
PS: A Grafana dashboard sample (based on the one posted in the refered issue): KokaKiwi/snowflake$165)
PPS: I'm a novice in Golang development (i'm more of a Rust person
Edited by Jill