How to combine nim-metrics and chronos for simple rest api?

[nimian]

I am trying to have a simple application combining startMetricsHttpServer() 
from nim-metrics and have a separate httpServer for my application. At this 
stage I am trying to just create an API REST endpoint.

I guess it would be unwise to use jester/httpbeast,asyncdispatch and 
nim-metrics together so I should just stick to chronos and presto. I tried to 
look into how nimbus-eth1 and nwaku do it but it's a bit complicated codebase 
for me to understand.