How do I cause my nuget package to include runtime in the consumer's csproj file?

Question

I am creating a NuGet package, and I would like, when this package is referenced, for the reference to look like this:

<PackageReference Include="A.PluginBase" Version="1.0.0">
    <ExcludeAssets>runtime</ExcludeAssets>
</PackageReference>

The article here describes why this is necessary, but it does not describe how to create a package such that manual editing of the consumer's .csproj file is necessary. How do I accomplish this, ideally without having to create a .nuspec (i.e. by altering the package's .csproj)?