docs: Show hierarchy, properties and signals
docs: Show hierarchy, properties and signals

We needed to pass the .so to valadoc.

Pelagicore/Media-Manager-Rygel-patched,jku/rygel,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,jku/rygel,GNOME/rygel,Tarnyko/rygel,Tarnyko/rygel