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.Server/GameObjects/ContainerSlot.cs

@@ -0,0 +1,51 @@
+using SS14.Server.GameObjects.Components.Container;
+using SS14.Server.Interfaces.GameObjects;
+using SS14.Shared.Interfaces.GameObjects;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Content.Server.GameObjects
+{
+    public class ContainerSlot : BaseContainer
+    {
+        public IEntity ContainedEntity { get; private set; } = null;
+
+        /// <inheritdoc />
+        public override IReadOnlyCollection<IEntity> ContainedEntities => new List<IEntity> { ContainedEntity }.AsReadOnly();
+
+        public ContainerSlot(string id, IContainerManager manager) : base(id, manager)
+        {
+        }
+
+        /// <inheritdoc />
+        public override bool CanInsert(IEntity toinsert)
+        {
+            if (ContainedEntity != null)
+                return false;
+            return base.CanInsert(toinsert);
+        }
+
+        /// <inheritdoc />
+        public override bool Contains(IEntity contained)
+        {
+            if (contained == ContainedEntity)
+                return true;
+            return false;
+        }
+
+        /// <inheritdoc />
+        protected override void InternalInsert(IEntity toinsert)
+        {
+            ContainedEntity = toinsert;
+        }
+
+        /// <inheritdoc />
+        protected override void InternalRemove(IEntity toremove)
+        {
+            ContainedEntity = null;
+        }
+    }
+}