Experiment: see about using the network-quality server

https://github.com/network-quality/server/blob/main/SERVER_SPEC.md

network-quality has posted both a server as well as a client. It could be interesting to alter our backends to use this server (or at least implement its api) as it would enable more interesting latency and network-under-load testing. The server currently should support ping frames (and has a get endpoint) that can be leveraged by the current frontend.