feat: add line renderer / visualisations for box collidors as a test

lightkeeper/include/Lightkeeper.h

@@ -21,7 +21,14 @@ public:
     void customFixedUpdate(float dt) override;
 
     void onWindowResize(int newWidth, int newHeight) override;
+
 private:
+    void drawDebugMenuBar();
+    void saveCurrentScene();
+    void loadScene();
+    void createEmptyScene();
+    void submitBoxColliderDebugLines();
+
     Camera camera{glm::vec3(0.f, 0.f, -5.f), glm::vec3(0, 1, 0)};
 
     MeshID sphereMesh;
@@ -34,6 +41,7 @@ private:
     char scenePath[512]{"scenes/debug_scene.json"};
     char newSceneName[128]{"EmptyScene"};
     std::string sceneStatus;
+    bool renderBoxColliders{false};
 };
 
 #endif //LIGHTKEEPER_H