Add DXGI_CREATE_FACTORY_DEBUG Constant to DXGI (#805)

* Add DXGI_CREATE_FACTORY_DEBUG Constant to DXGI

* Move it to the top of the class

* Remove unnecessary whitespace

* Apply suggestions from code review

Co-authored-by: Dylan Perks <[email protected]>

Author: Eeveelution

src/Microsoft/Silk.NET.DXGI/DXGI.cs

@@ -10,6 +10,10 @@ namespace Silk.NET.DXGI
 {
     public partial class DXGI
     {
+        [NativeName("Type", "unsigned int")]
+        [NativeName("Name", "DXGI_CREATE_FACTORY_DEBUG")]
+        public const uint CreateFactoryDebug = unchecked((uint) 0x1);
+
         public static DXGI GetApi()
         {
              return new DXGI(CreateDefaultContext(new DXGILibraryNameContainer().GetLibraryName()));