Draft: main: Use a GResource to load a default configuration
This MR is a request for comments (RFC) for the next wireplumber 0.5 configuration refactoring.
The changes here will make the wireplumber configuration 100% optional by always loading the default configuration stored as a GResource in the executable. This means that any of the changes in the configuration files (wireplumber.conf and wireplumber.conf.d/*) will always override the default configuration, and will always be installed under /etc (there won't be any configuration files under /usr/share). The configuration files are fully commented by default, and users can just uncomment/change settings when they want to change wireplumber's default behavior.
The point of this MR is to avoid wireplumber not working when the configuration changes with an update (eg when a new module is added).
You need the following pipewire branch to test this MR: https://gitlab.freedesktop.org/julian/pipewire/-/commits/default-config