Use trait instead to get load_fn and add name for pipeline

src/game/scenes/main_scene.rs

@@ -61,7 +61,7 @@ impl Scene for MainScene {
             swapchain_image_view.format(),
             depth_image_view.format(),
         );
-        pipeline_loader.register::<SimplePipeline>(SimplePipeline::new)?;
+        pipeline_loader.register::<SimplePipeline>()?;
         pipeline_loader.load_pipelines()?;
 
         let mut texture_loader = TextureLoader::new(app_context);