Move the daemon config file loading to a new conf.c file used by
the context to load the configuration. This replaces the module
profiles and some hacks to move properties around.
If there is nothing other specified with $PIPEWIRE_CONFIG_NAME or
a property, the client.conf file is loaded as a fallback.
Update the session manager config file to load the modules via the
config now. Rename the session modules section to another name.
Update pipewire-pulse to also load a specific pulse property file.
This then makes it pssible to assign specific RT priorities for the
pipewire-pulse process.
