pub fn add_skybox(mut commands: Commands, asset_server: Res<AssetServer>) {
    let skybox = asset_server.load("skybox.png");
    commands.spawn(Skybox {
        image: skybox.clone(),
        brightness: 100.0,
    });
    commands.insert_resource(SkyCubeMap {
        is_loaded: false,
        image_handle: skybox,
    });
}

use bevy::{prelude::*, render::render_resource::AsBindGroupShaderType};

use bevy::{core_pipeline::Skybox, prelude::*, render::render_resource::AsBindGroupShaderType};

    skybox::SkyCubeMap,

    let skybox = assets.load("skybox.png");

    commands.insert_resource(SkyCubeMap {
        is_loaded: false,
        image_handle: skybox.clone(),
    });

            parent.spawn(Camera3dBundle {
                transform: camera_transform,
                ..default()
            });

            parent.spawn((
                Camera3dBundle {
                    transform: camera_transform,
                    ..default()
                },
                Skybox {
                    image: skybox,
                    brightness: 100.0,
                },
            ));

        .add_systems(Startup, skybox::add_skybox)