Add make ghost role verb (#3204)

Content.Shared/GameObjects/Components/Observer/GhostRoles/MakeGhostRoleWindowClosedMessage.cs

@@ -0,0 +1,11 @@
+using System;
+using Content.Shared.Eui;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components.Observer.GhostRoles
+{
+    [Serializable, NetSerializable]
+    public class MakeGhostRoleWindowClosedMessage : EuiMessageBase
+    {
+    }
+}