Minor - Vsync toggle

New Method :

+ Set Vsync
+ Set Screen Width
+ Set Screen Height
+ Get Hwnd
+ Set Hwnd
+ IsWindowed
+ SetWindowed

New UI For Engine Settings :

+ Add Vsync Toggle to UI

enginecustom/d3dclass.h

@@ -46,6 +46,8 @@ public:
 	IDXGISwapChain* m_swapChain;
 	IDXGISwapChain* GetSwapChain();
 	void ResizeSwapChain(int, int);
+	void SetVsync(bool vsync);
+
 
 	XMMATRIX GetProjectionMatrix() const { return m_projectionMatrix; };
 	XMMATRIX GetWorldMatrix() const { return m_worldMatrix;};