System for single device net server per station functionality (#23946)

Content.Server/DeviceNetwork/Components/SingletonDeviceNetServerComponent.cs

@@ -0,0 +1,20 @@
+using Content.Server.DeviceNetwork.Systems;
+
+namespace Content.Server.DeviceNetwork.Components;
+
+[RegisterComponent]
+[Access(typeof(SingletonDeviceNetServerSystem))]
+public sealed partial class SingletonDeviceNetServerComponent : Component
+{
+    /// <summary>
+    /// Whether the server can become the currently active server. The server being unavailable usually means that it isn't powered
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public bool Available = true;
+
+    /// <summary>
+    /// Whether the server is the currently active server for the station it's on
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public bool Active = true;
+}