updated makefile for supporting different target architectures

use "ARCH=arch_name make"

restructured project folder, implementations and headers together under sources/

sources/GL_STUFF/SCENE/Instance3D.h

@@ -0,0 +1,21 @@
+#pragma once
+#include <glm/glm.hpp>
+/*
+#include <GL/glew.h>
+*/
+#include <GLES2/gl2.h>
+#include "./Model3D.hpp"
+#include "../SCENE/ObjectInstance.hpp"
+
+class Instance3D : public WorldInstanceable {
+
+private:
+    Model3D* mesh;
+
+public:
+    Instance3D(Model3D* mesh, vec3 position);
+    Instance3D(Model3D* mesh, vec3 position, vec3 scale);
+    Instance3D(Model3D* mesh, vec3 position, vec3 axis, float angle);
+    Instance3D(Model3D* mesh, vec3 position, vec3 scale, vec3 axis, float angle);
+    Model3D* getModel();
+};