Allow customizable base perks for each loadout

​Right now we can create 3 loadout for each class, but this only let you change your weapon, not the base perks. And some base perks are for specific weapons. I suggest to habilitate the feature of customizable base perks with each loadout, like this you could be more stretegic of what kind of weapons you'll use over the mission, not being lock in one weapon or wasting the perks.