Improve hands & pulling (#4389)

Content.Shared/Pulling/Events/PullStoppedMessage.cs

@@ -0,0 +1,11 @@
+using Robust.Shared.Physics;
+
+namespace Content.Shared.Physics.Pull
+{
+    public class PullStoppedMessage : PullMessage
+    {
+        public PullStoppedMessage(IPhysBody puller, IPhysBody pulled) : base(puller, pulled)
+        {
+        }
+    }
+}