Footstep sounds. (#182)

Content.Server/GameObjects/Components/CatwalkComponent.cs

@@ -0,0 +1,12 @@
+using SS14.Shared.GameObjects;
+
+namespace Content.Server.GameObjects.Components
+{
+    /// <summary>
+    ///     Literally just a marker component for footsteps for now.
+    /// </summary>
+    public sealed class CatwalkComponent : Component
+    {
+        public override string Name => "Catwalk";
+    }
+}