Enable sourcelink#207

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warrenbuckley wants to merge 2 commits intomodelsbuilder:v8/devfrom

warrenbuckley:enable-sourcelink

Commits on May 2, 2019

Update NuSpecs with the XML metadata for SourceLink
Warren Buckley
committed
Added in Microsoft.SourceLink.GitHub Nuget package - unable to build locally with PS1 build script seems it wants a very specific VS SDK installed even though VS17 & VS19 SDK tool is installed
Warren Buckley
committed