Remove devices from device lists when they get deleted (#16783)

* Implement device network device shutdown subscribtion
Implement removing devices from device lists when they get deleted

* Improve name and doc comment for DeviceShutDownEvent

* Change ShutdownSubscriber data field tag

* Change UpdateRemovalSubscription name to UpdateShutdownSubscription

Content.Server/DeviceNetwork/Components/DeviceNetworkComponent.cs

@@ -101,5 +101,13 @@ namespace Content.Server.DeviceNetwork.Components
         [ViewVariables(VVAccess.ReadWrite)]
         [DataField("sendBroadcastAttemptEvent")]
         public bool SendBroadcastAttemptEvent = false;
+
+        /// <summary>
+        ///     A list of entities that get sent the <see cref="DeviceShutDownEvent"/> when this entity gets deleted.<br/><br/>
+        ///     When a device subscribes to the deletion of another device the entity id of the device being subscribed
+        ///     to also gets saved on the subscribing device.
+        /// </summary>
+        [DataField("ShutdownSubscribers")]
+        public HashSet<EntityUid> ShutdownSubscribers = new();
     }
 }