dx12 dynamic lib loading + creation of device first pass.

JulietApp/Editor/EditorMain_win32.h

@@ -5,20 +5,23 @@
 
 namespace Juliet
 {
+    struct GraphicsDevice;
     struct Window;
+}
 
-    class Win32EditorApplication : public IApplication
-    {
-      protected:
-        void Init() override;
-        void Shutdown() override;
-        void Update() override;
-        bool IsRunning() override;
+class Win32EditorApplication : public Juliet::IApplication
+{
+  protected:
+    void Init() override;
+    void Shutdown() override;
+    void Update() override;
+    bool IsRunning() override;
 
-      private:
-        Window* MainWindow = {};
-        bool    Running    = false;
-    };
+  private:
+    Juliet::Window* MainWindow = {};
+    Juliet::GraphicsDevice* GraphicsDevice = {};
 
-    Win32EditorApplication& GetEditorApplication();
-} // namespace Juliet
+    bool            Running    = false;
+};
+
+Win32EditorApplication& GetEditorApplication();