Ambient Occlusion Bakery - Bake AO into Vertex information

Hello everybody!

I'd like to share with you a personal project of mine that I would love to publish into the asset store: AO Bakery.

I've been working a lot in VR and AO is something that you can't afford unless you're on a powerful system (I personally develop for the Quest so it's usually a no-go), and although there are already a couple of packages doing per-vertex AO, I always wanted to study how it's done first-hand.

So here I am, after a few days of trial and error, I've come up with a wee tool that bakes AO into vertex alpha and I developed a nice tool with a few utilities I thought were cool, like automatically save and swap meshes to not break prefabs.

I've also added a few shaders to boot, with customizable AO color, intensity and spread, here's what it looks like:

 

Any resources on how to achieve this? I'm trying to make a custom baker tool for this but I have no idea where to start