nupkg files require all architectures even with selective builds

While https://github.com/cefsharp/cef-binary/pull/100 initially covered this the final implementation either intentionally or not no longer templates the spec files.

This can cause it to try and restore arm64 binaries when only x64 packages are built. This doesn't require major changes but for arm64 removal for example modifying:
https://github.com/cefsharp/cef-binary/blob/master/NuGet/chromiumembeddedframework.runtime.json?#L13-L17

and potentially:
https://github.com/cefsharp/cef-binary/blob/master/NuGet/chromiumembeddedframework.runtime.nuspec?#L30

it requires some in the main project too (as otherwise the manual copies still try) but probably there straight conditionals would work:
https://github.com/cefsharp/CefSharp/blob/05577b7bf3933a057d42dabe0dc915676f9463a8/NuGet/PackageReference/CefSharp.Common.NETCore.targets?#L204-L224

I can do another PR to either remove these lines when select architectures are specified or go back to a templating system or nothing if it isn't desired for general support of select building.

Commencez par comparer les fichiers de packaging NuGet/chromiumembeddedframework.runtime.json et NuGet/chromiumembeddedframework.runtime.nuspec avec la section liée de CefSharp.Common.NETCore.targets. Suivez l’impact des builds pour des architectures sélectionnées sur la restauration des packages et les copies manuelles. C’est terminé lorsqu’un build x64 uniquement n’exige plus et ne tente plus de restaurer des binaires arm64.

Rédigé par le modèle d'indexation à partir du texte de l'issue.