working on build scripts

scripts/Microsoft.DotNet.Cli.Build.Framework/DebugHelper.cs

@@ -0,0 +1,29 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using System.Diagnostics;
+using System.Linq;
+
+namespace Microsoft.DotNet.Cli.Build.Framework
+{
+    public static class DebugHelper
+    {
+        [Conditional("DEBUG")]
+        public static void HandleDebugSwitch(ref string[] args)
+        {
+            if (args.Length > 0 && string.Equals("--debug", args[0], StringComparison.OrdinalIgnoreCase))
+            {
+                args = args.Skip(1).ToArray();
+                WaitForDebugger();
+            }
+        }
+
+        private static void WaitForDebugger()
+        {
+            Console.WriteLine("Waiting for debugger to attach. Press ENTER to continue");
+            Console.WriteLine($"Process ID: {Process.GetCurrentProcess().Id}");
+            Console.ReadLine();
+        }
+    }
+}