ResolveNuGetPackageAssets allocates 3.7% of solution-wide design-time build

[davkean]

This is literally turning text -> text, can we do this without NewtonSoft.Json? Otherwise, try the lower level reader API that JSON.NET has?

[davkean]

Some of this allocations is due to reading line annotations - turn that off via JsonLoadSettings.LineInfoHandling.

[nguerrera]

This is the version of package resolution for non-SDK projects. cc @Pilchie Does this go in project-system or nuget?

[Pilchie]

project-system has tended to make the changes, but the code lives at https://github.com/NuGet/NuGet.BuildTasks/.

[nguerrera]

This issue was moved to NuGet/Home#6755