.NET Standard compatible packages should be shown on NuGet.org

[emgarten]

From @Petermarcu on September 5, 2017 15:28

Copied from here: dotnet/standard#477
from @olegburov

I just saw the .NET Standard Deep Dive
video with @richlander and @terrajobst, and I think it would be handy if all ~70% of NuGet packages that are API compatible with .NET Standard 2.0, were market on http://nuget.org.

For instance, if I navigate to the https://www.nuget.org/packages/NQuery/ page, I want to see the NQuery NuGet is compatible with .NET Standard 2.0. Probably, the easiest way would be, add a special tag (not editable for a package's owner), which will also help to filter by a different criteria.

from: @tpetrina

Not only that, show the structure of nupkg file. This way we can at least analyse /lib folder to see which targets it supports.

Copied from original issue: NuGet/Home#5845

[skofman1]

@karann-msft

[lmcarreiro]

#4843
NuGet/Home#5725