Post #1723450

Over the weekend I also worked on integrating permissions for Wayland, XWayland and Snap applications. These now pop up and open right up and can be viewed/edited later on in System Settings. For Snaps, note that we don't use the snapd policy module (so plugging & unplugging audio permissions using `snap connect` & `snap disconnect` doesn't work), but our own trust-store module in PulseAudio instead.