Smooth docking traversal (#10822)

Content.Shared/CCVar/CCVars.cs

@@ -908,6 +908,16 @@ namespace Content.Shared.CCVar
          * Shuttles
          */
 
+        // Look this is technically eye behavior but its main impact is shuttles so I just dumped it here.
+        /// <summary>
+        /// If true then the camera will match the grid / map and is unchangeable.
+        /// - When traversing grids it will snap to 0 degrees rotation.
+        /// False means the player has control over the camera rotation.
+        /// - When traversing grids it will snap to the nearest cardinal which will generally be imperceptible.
+        /// </summary>
+        public static readonly CVarDef<bool> CameraRotationLocked =
+            CVarDef.Create("shuttle.camera_rotation_locked", true, CVar.REPLICATED);
+
         /// <summary>
         /// Whether cargo shuttles are enabled.
         /// </summary>