Codec Support Query: Basis Universal

**Is your feature request related to a problem? Please describe.**
Just noticed ["Basis Universal"](https://github.com/binomialLLC/basis_universal) pop up on [my twitter feed](https://mobile.twitter.com/Lady_Ada_King/status/1144546463365681152)
> ...a very compressed image format that are smaller to download will allow 6-8 times more textures in our WebGL scenes, enabling us to build richer worlds at higher fidelity

Was wondering if (in general) image formats that are targeted mostly at WebGL are in or out-of-scope for Squoosh, and (specifically) if this would be something that Squoosh could support?

**Describe the solution you'd like**
Yes/No on "is this format out-of-scope for Squoosh" ?

**Does other service/app have this feature?**
* Three.js

**Additional context**
* [Using Basis Textures in Three.js](https://medium.com/samsung-internet-dev/using-basis-textures-in-three-js-6eb7e104447d) by @adarosecannon
* #608
* [google are involved in the codec](https://opensource.googleblog.com/2019/05/google-and-binomial-partner-to-open.html) via [tweet mentioned in Ada's Medium post](https://twitter.com/mrdoob/status/1131271177735827456)