If I wanted to get a list of perks for each weapon type (for example, all possible perks for Shotguns, all possible perks for Auto Rifles, etc), how would I do that? I want to do this with as few query calls as I can, and I only want to get the perks that are obtainable in-game (in such a way that will ideally be updated automatically when HoW drops and adds newly obtainable perks to the mix).