add support for userdev launch in ide

add template for user plugins

CringeLauncher/UserDev/UserDevLauncher.cs

@@ -0,0 +1,23 @@
+using CringeLauncher.UserDev.Networking;
+using NLog;
+using VRage;
+using VRage.GameServices;
+
+namespace CringeLauncher.UserDev;
+
+public class UserDevLauncher() : Launcher(Environment.GetEnvironmentVariable("DOTNET_USERDEV_RUNDIR"))
+{
+    protected override void InitUgc()
+    {
+        var gameService = new UserDevGameService(AppId);
+        MyServiceManager.Instance.AddService<IMyGameService>(gameService);
+        MyServiceManager.Instance.AddService<IMyNetworking>(new MyNullNetworking(gameService));
+        MyServiceManager.Instance.AddService<IMyLobbyDiscovery>(new MyNullLobbyDiscovery());
+        MyServiceManager.Instance.AddService<IMyServerDiscovery>(new MyNullServerDiscovery());
+    }
+
+    protected override Task<bool> CheckUpdatesDisabledAsync(Logger logger)
+    {
+        return Task.FromResult(true);
+    }
+}