Tweaks the pillager mob

Features:
-Pillagers now behave like piglins when attacking; they back off if their target is too close while shooting them with
-Pillagers' loot table have also been changed, now they can drop the following:
>Damaged iron chestplate
>Emeralds(1-2)
>Arrows(1-2)
>Carrots
>Potatoes
>Sticks(1-2)
>Brewing stands(they stole these so the witches can brew potions)
>Leather(1-3)
>String(1-3)
>Iron ingots
-Pillager captains can now drop torn maps that lead to mansions, witch huts, villages and outposts(Thanks Suspicious Stoo for this)