Add visionOS destination

Author: FelixHerrmann

.github/workflows/xcodebuild.yml

@@ -23,6 +23,7 @@ jobs:
           - generic/platform=macOS,variant=Mac Catalyst
           - generic/platform=iOS
           - generic/platform=tvOS
+          - generic/platform=visionOS
     runs-on: macos-latest
     steps:
       - uses: actions/checkout@v4