[CFNetwork] Add nullability to forgotten files.

[mandel-macaque]

Add nullability to the files. Although this files won't be present in the new dotnet versions, it is good to add them for classic. Also, if we move all files to have nullability enabled we should be able to pass it as a flag and remove the need to use '#nullable enable' which people can forget.

[vs-mobiletools-engineering-service2]

🔥 Unable to find the contents for the comment: D:\a\1\s\change-detection\results\gh-comment.md does not exist :fire

Pipeline on Agent
Hash: [PR build]

[vs-mobiletools-engineering-service2]

💻 [PR Build] Tests on macOS M1 - Mac Big Sur (11.5) passed 💻

✅ All tests on macOS M1 - Mac Big Sur (11.5) passed.

Pipeline on Agent
Hash: f65ce11d5d4ffdcaf52714145ccd275a7d88c95e [PR build]

[vs-mobiletools-engineering-service2]

📚 [PR Build] Artifacts 📚

Packages generated

View packages

• Microsoft.iOS.Bundle.16.2.33-ci.pr.gh17208.pkg
• Microsoft.iOS.Ref.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.iOS.Runtime.ios-arm.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.iOS.Runtime.ios-arm64.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.iOS.Runtime.iossimulator-arm64.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.iOS.Runtime.iossimulator-x64.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.iOS.Runtime.iossimulator-x86.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.iOS.Sdk.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.iOS.Templates.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.iOS.Windows.Sdk.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.MacCatalyst.Bundle.16.2.33-ci.pr.gh17208.pkg
• Microsoft.MacCatalyst.Ref.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.MacCatalyst.Runtime.maccatalyst-arm64.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.MacCatalyst.Runtime.maccatalyst-x64.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.MacCatalyst.Sdk.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.MacCatalyst.Templates.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.macOS.Bundle.13.1.33-ci.pr.gh17208.pkg
• Microsoft.macOS.Ref.13.1.33-ci.pr.gh17208.nupkg
• Microsoft.macOS.Runtime.osx-arm64.13.1.33-ci.pr.gh17208.nupkg
• Microsoft.macOS.Runtime.osx-x64.13.1.33-ci.pr.gh17208.nupkg
• Microsoft.macOS.Sdk.13.1.33-ci.pr.gh17208.nupkg
• Microsoft.macOS.Templates.13.1.33-ci.pr.gh17208.nupkg
• Microsoft.NET.Sdk.iOS.Manifest-7.0.100.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.NET.Sdk.MacCatalyst.Manifest-7.0.100.16.2.33-ci.pr.gh17208.nupkg
• Microsoft.NET.Sdk.macOS.Manifest-7.0.100.13.1.33-ci.pr.gh17208.nupkg
• Microsoft.NET.Sdk.tvOS.Manifest-7.0.100.16.1.821-ci.pr.gh17208.nupkg
• Microsoft.NET.Workload.iOS.16.2.33-ci.pr.gh17208.msi
• Microsoft.tvOS.Bundle.16.1.821-ci.pr.gh17208.pkg
• Microsoft.tvOS.Ref.16.1.821-ci.pr.gh17208.nupkg
• Microsoft.tvOS.Runtime.tvos-arm64.16.1.821-ci.pr.gh17208.nupkg
• Microsoft.tvOS.Runtime.tvossimulator-arm64.16.1.821-ci.pr.gh17208.nupkg
• Microsoft.tvOS.Runtime.tvossimulator-x64.16.1.821-ci.pr.gh17208.nupkg
• Microsoft.tvOS.Sdk.16.1.821-ci.pr.gh17208.nupkg
• Microsoft.tvOS.Templates.16.1.821-ci.pr.gh17208.nupkg
• xamarin.ios-16.2.1.33.pkg
• xamarin.mac-9.1.1.33.pkg

Pipeline on Agent XAMBOT-1165.Monterey'
Hash: f65ce11d5d4ffdcaf52714145ccd275a7d88c95e [PR build]

[vs-mobiletools-engineering-service2]

🚀 [CI Build] Test results 🚀

Test results

✅ All tests passed on VSTS: simulator tests.

🎉 All 223 tests passed 🎉

Tests counts

✅ bcl: All 69 tests passed. Html Report (VSDrops) Download
✅ cecil: All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests: All 1 tests passed. Html Report (VSDrops) Download
✅ fsharp: All 7 tests passed. Html Report (VSDrops) Download
✅ framework: All 8 tests passed. Html Report (VSDrops) Download
✅ generator: All 2 tests passed. Html Report (VSDrops) Download
✅ interdependent_binding_projects: All 7 tests passed. Html Report (VSDrops) Download
✅ install_source: All 1 tests passed. Html Report (VSDrops) Download
✅ introspection: All 8 tests passed. Html Report (VSDrops) Download
✅ linker: All 65 tests passed. Html Report (VSDrops) Download
✅ mac_binding_project: All 1 tests passed. Html Report (VSDrops) Download
✅ mmp: All 2 tests passed. Html Report (VSDrops) Download
✅ mononative: All 12 tests passed. Html Report (VSDrops) Download
✅ monotouch: All 23 tests passed. Html Report (VSDrops) Download
✅ msbuild: All 2 tests passed. Html Report (VSDrops) Download
✅ mtouch: All 1 tests passed. Html Report (VSDrops) Download
✅ xammac: All 3 tests passed. Html Report (VSDrops) Download
✅ xcframework: All 8 tests passed. Html Report (VSDrops) Download
✅ xtro: All 2 tests passed. Html Report (VSDrops) Download

Pipeline on Agent
Hash: f65ce11d5d4ffdcaf52714145ccd275a7d88c95e [PR build]

[rolfbjarne]

Looks good, but I'd like the api diff to confirm no api changes as well (I just re-kicked it).

[vs-mobiletools-engineering-service2]

✅ API diff for current PR / commit

Legacy Xamarin (No breaking changes)

• iOS (no change detected)
• tvOS (no change detected)
• watchOS (no change detected)
• macOS (no change detected)

NET (empty diffs)

• iOS: (empty diff detected)
• tvOS: (empty diff detected)
• MacCatalyst: (empty diff detected)
• macOS: (empty diff detected)

✅ API diff vs stable

Legacy Xamarin (No breaking changes)

• iOS: vsdrops gist (No breaking changes)
• tvOS: vsdrops gist (No breaking changes)
• watchOS: vsdrops gist (No breaking changes)
• macOS: vsdrops gist (No breaking changes)

.NET (No breaking changes)

• iOS: vsdrops gist (No breaking changes)
• tvOS: vsdrops gist (No breaking changes)
• MacCatalyst: vsdrops gist (No breaking changes)
• macOS: vsdrops gist (No breaking changes)
• Microsoft.iOS vs Microsoft.MacCatalyst: vsdrops gist

Legacy Xamarin (stable) vs .NET

• iOS: vsdrops gist
• tvOS: vsdrops gist
• macOS: vsdrops gist

✅ Generator diff

Generator diff is empty

Pipeline on Agent
Hash: f65ce11d5d4ffdcaf52714145ccd275a7d88c95e [PR build]

[rolfbjarne]

API diff looks good!