Inventories (#61)

* Bully the fuck out of inventory shit
Inventory Stuff
Inventories technically work
It works technicaly speaking
Yeah this part too
Lets do it!
Inventories completed
Motherfucker

* Remove unnecessary usings and fix one thing

* Submodule update

* Adds a bunch of various clothing prototypes for each current inventory slot

Content.Shared/GameObjects/Components/Inventory/InventoryTemplates.cs

@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using static Content.Shared.GameObjects.Components.Inventory.EquipmentSlotDefines;
+
+namespace Content.Shared.GameObjects
+{
+    public abstract class Inventory
+    {
+        abstract public int Columns { get; }
+
+        abstract public List<Slots> SlotMasks { get; }
+    }
+
+    public class HumanInventory : Inventory
+    {
+        public override int Columns => 3;
+
+        public override List<Slots> SlotMasks => new List<Slots>()
+            {
+                Slots.EYES, Slots.HEAD, Slots.EARS,
+                Slots.OUTERCLOTHING, Slots.MASK, Slots.INNERCLOTHING,
+                Slots.BACKPACK, Slots.BELT, Slots.GLOVES,
+                Slots.NONE, Slots.SHOES, Slots.IDCARD
+            };
+    }
+}