The audio subsystem of windows is by default configured to lower the
volume of other things while a communications device (mic) is currently
active. This patch prevents that from being enabled with OBS. If the
user needs audio ducking enabled again for whatever reason, there is now
an option to re-enable it in advanced settings.
Closesjp9000/obs-studio#884
All of the monitor discovery logic can be implemented with Qt. This
change removes all the x11 implementations in favor of Qt and removes a
fair amount of platform specific code.
