Migrated vendored motion controllers to ts

[saitonakamura]

What

Migrated vendored MotionController and XRControllerModelFactory to ts. I wasn't sure before, but now decided that it's better to continue with our own vendored version of these stuff, cause it'll allow us to push it further in terms of stability and feature-richness. Previous thoughts can be found below

Right now it's a best-effort, and I'm not sure how to proceed. Main issue is that the issues why it was vendored in the first place was fixed since then and also typings improved, but new version haven't been released. I created an issue in the repo immersive-web/webxr-input-profiles#224, but I'm not sure if we should just give up.

The right way to do it would be to:

• Use a new version of @webxr-input-profiles/motion-controllers with proper bundles and types and get rid off vendored one
• Use types here https://github.com/three-types/three-ts-types/blob/master/types/three/examples/jsm/webxr/XRControllerModelFactory.d.ts#L8

Checklist

• Documentation updated
• Storybook entry added
• Ready to be merged

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Name	Status	Preview	Updated
three-stdlib	✅ Ready (Inspect)	Visit Preview	Dec 21, 2022 at 10:24AM (UTC)

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