Keep Unity state surface compile fixes

Assets/Scripts/Gameplay/AetheriaUnityCockpitHudShell.cs

@@ -2,6 +2,8 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
+using GameCult.Aetheria.State.Verse;
+
 public sealed class AetheriaUnityCockpitHudShell
 {
     public InventoryPanel ShipPanel { get; set; }