I am also looking for answer to same question. GitHub servers come with own dash board and without installing Dynatrace agent in the servers, is there any way we can import the GitHub Monitoring metrices to Dynatrace.
as far as I can see GitHub have pretty nice API for that. So the most viable way would be creating extension that drags those data to Dynatrace. Unfortunately I don't think there is prometheus adapter for that API cause this would allow us to create Extension 2.0 and make this very easy and flexible at the same time. Link to extension docs: https://www.dynatrace.com/support/help/extend-dynatrace/extensions
