This change also keeps the plugin always activated, regardless of whether the
DBus connection is closed or not, which is useful when the dbus service is
restarted.
The component loader is a more generic and extensible mechanism
of loading components; modules are one type of component...
The idea is to make scripts and config files also be components,
loaded by plugins that inherit WpComponentLoader
* use the activate/deactivate system from WpObject,
which allows async activation and error reporting
* drop 'module' property, use 'core' from WpObject
This one offers API to interract on a lower level with
the D-Bus reservation API and uses GDBus high level bindings only.
Also, this one implements the full Acquire procedure, calling
RequestRelease() on the peer and requesting the name again with
REPLACE_EXISTING
