Add a fully functional headless rendering example #11457
Description
Here's a working example ( bevy v0.12.1 ) for anyone else who needs a headless renderer - https://github.com/mosure/bevy_gaussian_splatting/blob/main/examples/headless.rs
Originally posted by @cs50victor in #3155 (comment)