chore: move depth test setting to gfx init

src/hello.cpp

@@ -86,6 +86,8 @@ int initGraphics(GLFWwindow** window)
         return -1;
     }
 
+    glEnable(GL_DEPTH_TEST);
+
     return 0;
 }
 
@@ -155,8 +157,6 @@ int main()
     Icosphere sphere(0.5, 2);
     Orbit orbit(30, glm::vec3(.5, .5, 0));
 
-    glEnable(GL_DEPTH_TEST);
-
     // Main loop
     while (!glfwWindowShouldClose(window))
     {