Generating qlog files when using quicly as a library

[Gaganjeet Reen]

Is there any documentation about what steps need to be followed to generate qlog files when using quicly as a library in applications?
I see a bunch of PRs relating to traces, dtraces, logs, etc, but I was unable to find any coherent source of information about the steps that need to be followed to enable this logging and tracing.

I'd appreciate any pointers about this functionality and would be happy to include this in the documentation and raise a PR for ease of future users.
Thanks!