GLTF - ability to get the loader instance before the loading starts

[schelmo]

it would be nice to get the loader instance, before the loading is happening, to register some extensions maybe with an event?

<script setup>
// ...
const registerExtensions = (loader) => {
  loader.setDRACOLoader (dracoLoader)
  loader.register(myExtension())
}
</script>

<template>
  <Renderer>
    <Scene>
      <GltfLloader @loader-initialized="registerExtensions" :src="mySrc" />
    </Scene>
  </Renderer>
</template>