add webxr types as dep

[HexaField]

Summary

🤖 Generated by Copilot at 44c4a9d

This pull request adds WebXR support for the engine, allowing it to create VR and AR experiences on the web. It introduces a new dependency, @types/webxr, to provide TypeScript definitions for the WebXR API.

References

closes #insert number here

Explanation

🤖 Generated by Copilot at 44c4a9d

• Add @types/webxr dependency to enable WebXR typings (link)

🤖 Generated by Copilot at 44c4a9d

WebXR in engine
Immersive worlds on the web
Cut by @types

QA Steps

List any additional steps required to QA the changes of this PR, as well as any supplemental images or videos.

Checklist

• If this PR is still a WIP, convert to a draft
• When this PR is ready, mark it as "Ready for review"
• ensure all checks pass
• Changes have been manually QA'd
• Changes reviewed by at least 2 approved reviewers