Add aioprometheus

[florimondmanca]

Checklist

• This project is explicitly related to ASGI.
• The new list entry contains a project name, URL and description.

What is this project?

aioprometheus is a Prometheus client for async applications. It targets ASGI explicitly with a framework-independent ASGI middleware.

https://github.com/claws/aioprometheus/

Do you know about other similar projects?

Yes, there's https://github.com/stephenhillier/starlette_exporter

If so, how is this one different?

Both aioprometheus and starlette_exporter are framework-agnostic (the latter just uses starlette internally to facilitate ASGI data processing — AFAICS it could be renamed to asgi-exporter). But their goals are different: starlette_exporter provides metrics, while aioprometheus does that (through aioprometheus.starlette.metrics) and provides Prometheus client capabilities — allowing to send custom gauges, counters, etc. So I think this one is best to put on this list.

Either way, a "Prometheus for ASGI" entry is definitely a nice addition to the list — we don't have one yet.

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[florimondmanca]

/azp run

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