Apc device network and apc based light switch (#4908)

* Remove WireNet node group from cables
Implement extension cable components and system
Remove connection over distance logic from ApcPower... components

* Add extension cable components to prototypes

* Implement ApcNetwork
Implement ApcNetSwitch

* Fix ignoredComponents.cs

* Add friend attribute to new components

* Add construction graph for a light switch

* Address reviews

* Fix broken test

* Move ConnectionType enum to DeviceNetworkComponent
Change netId data definition to use the ConnectionType enum values

Co-authored-by: Julian Giebel <j.giebel@netrocks.info>

Content.Server/DeviceNetwork/Components/DeviceNetworkComponent.cs

@@ -1,3 +1,4 @@
+using System;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
@@ -9,16 +10,22 @@ namespace Content.Server.DeviceNetwork.Components
     {
         public override string Name => "DeviceNetworkComponent";
 
+
         /// <summary>
-        /// The device networks netID this DeviceNetworkComponent connects to.
-        /// The netID is used to seperate device networks that shouldn't interact with each other e.g. wireless and wired.
-        /// The default netID's are_
-        /// 0 -> Private
-        /// 1 -> Wired
-        /// 2 -> Wireless
+        ///  Valid device network NetIDs.
+        /// The netID is used to separate device networks that shouldn't interact with each other e.g. wireless and wired.
         /// </summary>
+        [Serializable]
+        public enum ConnectionType
+        {
+            Private,
+            Wired,
+            Wireless,
+            Apc
+        }
+
         [DataField("deviceNetId")]
-        public int DeviceNetId { get; set; } = (int)DeviceNetworkConstants.ConnectionType.Private;
+        public ConnectionType DeviceNetId { get; set; } = ConnectionType.Private;
 
         [DataField("frequency")]
         public int Frequency { get; set; } = 0;