Add timeout for host process /waitForDebugger flag

This change adds a 15 second timeout for the /waitForDebugger flag in
debug builds.  This prevents hangs when Visual Studio can't attach to the
process automatically when debugging tests.

Author: daviwil

src/PowerShellEditorServices.Host/Program.cs

@@ -28,9 +28,12 @@ static void Main(string[] args)
             // Should we wait for the debugger before starting?
             if (waitForDebugger)
             {
-                while (!Debugger.IsAttached)
+                // Wait for 15 seconds and then continue
+                int waitCountdown = 15;
+                while (!Debugger.IsAttached && waitCountdown > 0)
                 {
-                    Thread.Sleep(500);
+                    Thread.Sleep(1000);
+                    waitCountdown--;
                 }
             }
 

test/PowerShellEditorServices.Test.Host/LanguageServiceManager.cs

@@ -40,7 +40,7 @@ public void Start()
                 {
                     FileName = "Microsoft.PowerShell.EditorServices.Host.exe",
                     Arguments = languageServiceArguments,
-                    CreateNoWindow = false,
+                    CreateNoWindow = true,
                     UseShellExecute = false,
                     RedirectStandardInput = true,
                     RedirectStandardOutput = true,