TDE dialogs for PolicyKit

PolicyKit is an application-level toolkit for defining and handling the policy
that allows unprivileged processes to speak to privileged processes.

It is a framework for centralizing the decision making process with respect to
granting access to privileged operations for unprivileged (desktop) applications.

PolicyKit-agent-tde provides a D-Bus session bus service that is used to
bring up authentication dialogs used for obtaining privileges.