publish a Microsoft.NET.WebAssembly.Webcil nuget to the transport feed

[lambdageek]

See discussion in #86587 (reply in thread)

Contributes to #80807

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Issue Details

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See discussion in #86587 (reply in thread)

Contributes to #80807

Author:	lambdageek
Assignees:	-
Labels:	untriaged, area-Infrastructure-mono, needs-area-label
Milestone:	-

[lambdageek]

We want something like this:
https://github.com/dotnet/runtime/blob/c5cfd7b97f904e38c2d8daf28e8f2c99c8528603/src/coreclr/.nuget/ILCompiler.Reflection.ReadyToRun.Experimental/ILCompiler.Reflection.ReadyToRun.Experimental.pkgproj

[lewing]

@thaystg what is needed here?