Add a debug/example congroup so server commands and scripting works.

Content.Server/LocalHostConGroup.cs

@@ -0,0 +1,50 @@
+using System.Net;
+using JetBrains.Annotations;
+using Robust.Server.Console;
+using Robust.Server.Player;
+
+namespace Content.Server;
+
+/// <summary>
+///     Debug/example ConGroup controller implementation that gives any client connected through localhost every permission.
+/// </summary>
+[UsedImplicitly]
+public sealed class LocalHostConGroup : IConGroupControllerImplementation, IPostInjectInit {
+    public bool CanCommand(IPlayerSession session, string cmdName) {
+        return IsLocal(session);
+    }
+
+    public bool CanViewVar(IPlayerSession session) {
+        return IsLocal(session);
+    }
+
+    public bool CanAdminPlace(IPlayerSession session) {
+        return IsLocal(session);
+    }
+
+    public bool CanScript(IPlayerSession session) {
+        return IsLocal(session);
+    }
+
+    public bool CanAdminMenu(IPlayerSession session) {
+        return IsLocal(session);
+    }
+
+    public bool CanAdminReloadPrototypes(IPlayerSession session) {
+        return IsLocal(session);
+    }
+
+    private static bool IsLocal(IPlayerSession player) {
+        var ep = player.ConnectedClient.RemoteEndPoint;
+        var addr = ep.Address;
+        if (addr.IsIPv4MappedToIPv6) {
+            addr = addr.MapToIPv4();
+        }
+
+        return Equals(addr, IPAddress.Loopback) || Equals(addr, IPAddress.IPv6Loopback);
+    }
+
+    void IPostInjectInit.PostInject() {
+        IoCManager.Resolve<IConGroupController>().Implementation = this;
+    }
+}

Content.Server/ServerContentIoC.cs

@@ -5,5 +5,6 @@ internal static class ServerContentIoC
     public static void Register()
     {
         // DEVNOTE: IoCManager registrations for the server go here and only here.
+        IoCManager.Register<LocalHostConGroup>();
     }
 }