Added main program for EF tooling

I18N Commander/DataModel/Program.cs

@@ -0,0 +1,13 @@
+using Microsoft.Extensions.Hosting;
+namespace DataModel;
+
+public static class Program
+{
+    public static void Main(string[] args)
+    {
+        Console.WriteLine("This app is intended for the EF tooling. You cannot start this data project, though.");
+        Environment.Exit(0);
+    }
+
+    public static IHostBuilder CreateHostBuilder(string[] args) => Setup.Setup4EFTooling(args);
+}