Includes a plugin to handle the portal permission store dbus interface

Replaces old module-client-permissions module

meson can't find project options before executing the project() command :(

This reverts commit 8bff0cc6.

... because loading a script first looks in that directory, so it's
easy to make tests break by a conflicting file in the system config dir,
for instance, /etc/wireplumber/scripts/pod.lua

Use the numeric values of the spa types instead of their string representation

Avoids confusion with LUA iterate API

... plus the necessary API for it to work

Sometimes the GEnumClass is not instantiated, so _peek() doesn't work
We need to acquire a strong ref to make sure it is

Use the spa type system to locate the enumeration value that corresponds
to that string and send that

This can be useful for quick testing of scripts, or to build small
utilities that do something in pipewire utilizing our lua API

Because of the new design of the daemon and the async activation of plugins,
the reserve-device plugin connects to d-bus before monitor-alsa is executed
and therefore there is no need to wait for the connection