Illager patrols & Pillager Packs

New item : pillager pack

Presumably the pillagers pillage to steal stuff from villages not just because they're mean, they have chests in their base where I assume they stock their loot, but how do they get it from the village to the outpost?

Introducing the pillager pack, in appearance, something similar to the chest in the donkey, but on the back of the lead pillager, it would provide extra storage in the inventory similar to a shulker shell and give the illager- banner something to be placed on rather than being clipped into the pillager head.

This would also be wearable by the player, equipped in place of the chest armour slot it grants a chestful of extra storage places and allows the player to display their own banner above their head.

It would help in early game before travelling to The End with transporting goods across the world and general exploring, and serve as a good reward for fending off a patrol.

Additional thoughts; it could be combined with chest armour at the penalty of either halfing the armour rating or inventory space