Add pulling taking up a hand (#2405)

* Add pulling taking up a hand

* Revert unnecessary refactor

Content.Client/UserInterface/HandButton.cs

@@ -1,15 +1,25 @@
 using Content.Shared.GameObjects.Components.Items;
 using Robust.Client.Graphics;
+using Robust.Client.UserInterface.Controls;
 
 namespace Content.Client.UserInterface
 {
     public class HandButton : ItemSlotButton
     {
-        public HandButton(Texture texture, Texture storageTexture, HandLocation location) : base(texture, storageTexture)
+        public HandButton(Texture texture, Texture storageTexture, Texture blockedTexture, HandLocation location) : base(texture, storageTexture)
         {
             Location = location;
+
+            AddChild(Blocked = new TextureRect
+            {
+                Texture = blockedTexture,
+                TextureScale = (2, 2),
+                MouseFilter = MouseFilterMode.Stop,
+                Visible = false
+            });
         }
 
         public HandLocation Location { get; }
+        public TextureRect Blocked { get; }
     }
 }