Effects which copy multiple stack objects at once don't allow the controller to choose the order

Some examples from this [scryfall search](https://scryfall.com/search?q=o%3A%22copy%22+-o%3A%22copy+target%22+-o%3A%22copy+each+exiled+card%22+-o%3A%22cast+any+number+of+the+copies%22+-o%3A%22copy+that%22+-o%3A%22cast+the+copy%22+-o%3A%22copy+the+spell%22+-o%3A%22copies+that%22+-o%3A%22copy+a+spell%22+-o%3A%22copy+those+cards%22+-o%3A%22copy+an+instant%22+-o%3A%22copy+%7E%22+-o%3A%22copies+it%22+-o%3A%22copy+the+next%22+-o%3A%22the+copy+isn%27t%22+-o%3A%22copy+the+exiled+card%22+-o%3A%22copy+of%22+game%3Apaper+-o%3A%22copy+this%22+-o%3A%22copy+each+card%22+-o%3A%22copy+a+card%22+-o%3A%22cast+or+copy%22+-o%3A%22copy+it%22&unique=cards&as=grid&order=name):

[[Display of Power]]:

> If you copy multiple spells with Display of Power, you can put the copies on the stack in any order.

[[Finale of Promise]]:

> Then, if X is 10 or more, you copy each of those twice and put the copies on the stack in any order.

[[Ulalek, Fused Atrocity]]

Player currently have a `chooseTriggeredAbility` choice, but this obviously only works for triggered abilities. It would be nice to have a `chooseStackObject` choice and UI for this situation - maybe it should look similar to the `chooseTriggeredAbility` UI since semantically you're doing the same thing.

These cards are also all currently using `StackObject::createCopyOnStack(...)`... maybe it would be good to have a helper method `StackObjects::createCopiesOnStack` for multiple stack objects that invokes this new player choice.