Deprecate PathfinderAction and make DelayHost optional #257
Description
We should consider marking PathfinderAction obsolete and instead direct users to DelayablePathfinderAction. In the next breaking change, we can rename the latter to the former so all actions will be delayable.
The DelayHost attribute should be made optional on both vanilla and Pathfinder actions. It should default to an inaccessible node with <FastActionHost> or possibly a custom action delayer that is not tied to any node or filesystem.