Odin is not like JS or something where you'd need a VM or transpilation process to target an embedded system. It's just C with nicer syntax and modern data structures, there's no "squeezing" required. You just compile for the target you want to run on.

Here's a UI framework, if you scroll down you'll see it on a Raspi Pico: https://github.com/MadlyFX/Ansuz