Enables rights management provided by :class:`fatbotslim.handlers.RightsHandler`.

def enable_rights(self):
        """
        Enables rights management provided by :class:`fatbotslim.handlers.RightsHandler`.
        """
        if self.rights is None:
            handler_instance = RightsHandler(self)
            self.handlers.insert(len(self.default_handlers), handler_instance)