An implementation of Listener interface is used by the clients that invoke
install/uninstall functions of AppManagement in local mode. The local mode
APIs of AppManagement (such as installApplicationLocal) take a Listener object
as one of the parameters and notify it of the progrss of the
AppManagement operation.
This is a callback method from AppManagement logic. The callback is
made during various application management operations (local version only)
to inform the client about status of the operation.