Support allowedVersions similar to packages.config

[thompson-tomo]

Is your feature request related to a problem?

When a nuget package is packaged the allowed versions is written into the nuspec file and the version is ignored.

Describe the solution you'd like

I want to specify as part of a package reference the allowed versions of that package so that it can appear in the nuspec. It would also provide control over tools like dependabot who would be blocked from exceeding that range. This also applies to CPM.

Additional context

NuGet/Home#11842

[dotnet-policy-service]

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