congestion window missing in qlog

[dbaldassi]

I don't get the congestion window and bytes in flight data in the qlog files,
As you can see in qvis :

Is it an option to enable somewhere ?
Or, mvfst just don't log these info ?

[lnicco]

At this time we don't log those events.
Should be an easy fix, but it may take us some time to get to it. In the meantime we'll review any pull request.