[WebGPU] Implement GPUAdapter.requestAdapterInfo
<rdar://problem/104829439>
Pull request: https://github.com/WebKit/WebKit/pull/12923
Committed 263164@main (1e0ff03a5f05): <https://commits.webkit.org/263164@main> Reviewed commits have been landed. Closing PR #12923 and removing active labels.