If an action is old (set in config) and has no more listeners it should just be evicted from the queue, since no one is waiting for the action.

see: https://github.com/TraceMachina/turbo-cache/blob/f15146d0cf94e1a9159f14db775efe4a3e27355d/cas/scheduler/simple_scheduler.rs#L432

We should implement this using timeouts and upon timing out signal to the worker to kill the action.