#253 (Rylec) Lua functions NPC equip and unequip equipment (weapon and armor slots)

SetEquippedItemByID(Entity, slot, item_id)
SetEquippedItem(Entity, slot, item)
UnequipSlot(Entity, slot, no_delete_item) -- does delete the item upon unequipping by default, otherwise set no_delete_item = true
SetEquipment(Entity, slot, type, r, g, b, h_r, h_g, h_b) -- (r = red, g = green, b = blue, h_ = highlights)

Commands for Entity class only (NPC/Client). ``` SetEquippedItemByID(Entity, slot, item_id) SetEquippedItem(Entity, slot, item) UnequipSlot(Entity, slot, no_delete_item) -- does delete the item upon unequipping by default, otherwise set no_delete_item = true SetEquipment(Entity, slot, type, r, g, b, h_r, h_g, h_b) -- (r = red, g = green, b = blue, h_ = highlights) ```