The GLib error level is fatal, but pipewire doesn't use it that way.
Also, the GLib critical level is meant only for programming errors
(assertions) and not for runtime errors. warn & msg levels really
fit well with the error & warn, as they are being used in pipewire
currently.
This extends GLib's logging system, so it is compatible with
g_debug() and friends, but it uses a better logging format and
supports filtering debug domains with wildcards, like in gst.
