add a hand calling skill

[polar fiber]

While , in modern hunting, there’s a lot of emphasis placed on buying the proper lure calls for your game, something that is often forgotten, is it our ancestors would often call game using nothing but their voice, and maybe their hands arranged to make a whistle call. I think the ambusher tree would be greatly improved by giving a hand call skill that we can use to call a number of different animals without having to take up inventory space bringing lure calls. obviously, this would be an end game skill like disturb vegetation or keen eye, but it would do a lot to increase the immersion of the fantasy of being this super accomplished Hunter, who was basically born in the African bush