Rules should not apply to a single entry from some index

Some rules should not have a key argument, and rather be applied on each entry from some index

Example:

def uidUnique(local_iindex, global_iindex, key) do

https://gitlab.imt-atlantique.fr/dunixir/dunixir/-/blob/9362857b9eb94151022eaf8b8cbc233847411e6a/lib/index/local_augmentation_example.ex#L556