Can not compile for visionOS

[WillBishop]

Describe the bug
Trying to compile this library for VisionOS results in a heap of errors.

To Reproduce
Steps to reproduce the behavior:

1. Create an new Xcode Project
2. Add this library as an SPM dependency
3. Add Apple Vision as a target (not the 'Made for iPad' variant, you need the native Apple Vision target).
4. Attempt to compile this library.

Expected behavior
I would like to see this library compiling for VisionOS as it's coming out soon and without this library apps the implement Google log in aren't able to test their apps.

Screenshots
If applicable, add screenshots to help explain your problem.

Environment

• Device: MacBook Pro M1 (Apple Vision Pro Simulator)
• OS: visionOS

[mdmathias]

This is a duplicate of #353