Added Rendrerer class and camera optimization

src/Renderer.h

@@ -0,0 +1,14 @@
+#ifndef RENDERER_H
+#define RENDERER_H
+
+#include "Mesh.h"
+#include "Shader.h"
+
+class Renderer {
+    public:
+        Renderer();
+        void draw(const Mesh& mesh, Shader& shader);
+        void clear() const;
+};
+
+#endif