Fix default capture options not being applied in 0.20 and above

* These capture options used to be propagated through from the C++ struct
  when there was a C++/CLI dll used for interop between C# and C++. Now
  that we use P/Invoke this needs to be added back so a couple of default
  options can be enabled

renderdocui/Windows/Dialogs/CaptureDialog.cs

@@ -42,7 +42,7 @@ namespace renderdocui.Windows.Dialogs
     {
         public class CaptureSettings
         {
-            public CaptureOptions Options = new CaptureOptions();
+            public CaptureOptions Options = CaptureOptions.Defaults;
             public bool Inject = false;
             public bool AutoStart = false;
             public string Executable = "";