Following the release of Godot 4.4, you will be pleased with the Godot XR update. A key part of this update is the addition of the MetaToolkit extension, applicable to W4 Games.
This GDExtension plugin exposes the capabilities of the Meta Platform SDK and provides other platform tools to simplify and speed up XR development on the specified.
The project is open source (MIT license) and W4 Games sponsored terms.
You can download version 1.0.2 from GitHub.