Implemented basic occlusions queries

src/Engine/Graphics/Query.h

@@ -0,0 +1,19 @@
+#pragma once
+#include "MinimalEngine.h"
+
+namespace Seele {
+namespace Gfx {
+class OcclusionQuery {
+  public:
+    OcclusionQuery();
+    virtual ~OcclusionQuery();
+    virtual void beginQuery() = 0;
+    virtual void endQuery() = 0;
+    virtual void resetQuery() = 0;
+    virtual uint64 getResults() = 0;
+
+  private:
+};
+DEFINE_REF(OcclusionQuery)
+} // namespace Gfx
+} // namespace Seele