New custom items.xml variable that adds a collectible effect automatically once you pick up an item

[Foks256]

Sometimes you want your item (or trinket) to give an effect on pickup right away, It's not hard to do on your own really thanks to the add_collectible callback, but I think having a new variable for that would be a nice qol change, could be called addeffectsonpickup, true to add, false by default to not add anything, would mirror cleareffectsonremove :3