Missing WebXRManager exports in r167

[asyncore]

PR #1079 seems to have removed the following export from three.d.ts

export * from "./renderers/webxr/WebXRManager.js";

Which causes missing THREE.WebXRArrayCamera and THREE.WebXRManager symbol errors in our codebase.

Do you know if the change was intentional?

[Methuselah96]

It was unintentional. The goal of that PR was to match the exports of three.js in order to avoid exporting more JS values from the main entry-point than three.js does, however I missed a few type-only exports that should still be exported.

#1131 adds back some of the other type exports I missed. I'll work on creating a PR to add these back as well, or feel free to do it yourself if you beat me to it.