Add the media loading entity

package.json

src/components/auto-box-collider.js

src/components/gltf-model-plus.js

src/components/image-plus.js

src/components/sticky-object.js

src/components/super-networked-interactable.js

src/hub.html

src/hub.js

src/utils/auto-box-collider.js

src/utils/media-utils.js

yarn.lock