Integrate library into statsd_exporter like service

[raags]

I'm using Prometheus statsd_exporter to send metrics to Victoriametrics. I would like to use the metrics library, primarily to support VictoriaMetrics Histograms. Looking into statsd_exporter, it's not easy to add this feature there, as its coupled tightly with the Prometheus Go client library.

In addition, my future plan is to move to Statsd to VM push-based pipeline; however, this means no Histogram support (except for gostatsd by Atlassian that has experimental support for Prometheus style Histograms). It would be great if VM type histograms are added there, or other notable statsd servers.

[valyala]

There are plans to add statsd-like service into vmagent - see https://github.com/VictoriaMetrics/VictoriaMetrics/issues/206 .