Adding metal headers

src/Engine/Graphics/Metal/Graphics.cpp

@@ -1,4 +1,6 @@
 #include "Graphics.h"
+#include "Metal/MTLDevice.hpp"
+#include "Metal/MTLRenderCommandEncoder.hpp"
 #define NS_PRIVATE_IMPLEMENTATION
 #define CA_PRIVATE_IMPLEMENTATION
 #define MTL_PRIVATE_IMPLEMENTATION
@@ -19,6 +21,7 @@ Graphics::~Graphics()
 }
 void Graphics::init(GraphicsInitializer initializer)
 {
+  device = MTL::CreateSystemDefaultDevice();
 }
 
 Gfx::OWindow Graphics::createWindow(const WindowCreateInfo &createInfo)

src/Engine/Graphics/Metal/Graphics.h

@@ -1,5 +1,4 @@
 #pragma once
-#include "Foundation/Foundation.hpp"
 #include "Metal/Metal.hpp"
 #include "Graphics/Graphics.h"
 
@@ -54,7 +53,6 @@ public:
     virtual void resolveTexture(Gfx::PTexture source, Gfx::PTexture destination) = 0;
 protected:
     MTL::Device* device;
-    NS::Application* app;
 };
 } // namespace Metal  
 } // namespace Seele