Custom Loader for AssetServer & GLTF Loading

[DasLixou]

Is there a way to make a custom AssetServer loader? i want to make a file format which contains gltf bytes and additional data. so i need a custom loader which also gets me the gltf model. Also i wanted to ask if i must spawn a SceneBundle with x.gltf#Scene0 or if there is another way to spawn it like ModelBundle or GltfBundle etc.

Thanks :D