More config and testing adding models

Seperated Sanbox premake config from the main premake file.

SandboxApplication/include/GUI.h

@@ -0,0 +1,9 @@
+#pragma once
+#include "imgui.h"
+#include <BarinkEngine.h>
+
+void CameraTool(Camera* camera);
+void ScriptingTool(char* code);
+void transformWindow(Transform& transform, std::string PanelName);
+void materialWindow(Material& material, std::string PanelName);
+void SceneExplorer(Scene& scene, std::string PanelName);

SandboxApplication/include/Util.h

@@ -0,0 +1,6 @@
+#pragma once
+#include "BarinkEngine.h"
+
+void PrintSceneTree(Node& node, int depth);
+
+glm::mat4 CalculateModelMat(Transform& transform);