Custom Public Upstream NuGet Feeds in Azure DevOps

Hi all,

I'm trying to get some community support behind this Azure DevOps Feature Request to add Custom Public Upstream NuGet Feeds eg. https://nuget.episerver.com/
https://developercommunity.visualstudio.com/idea/366068/custom-public-upstream-sources-in-nuget-package-ma.html

Currently, public upstream feeds are limited to nuget.org and npmjs.com.

Cheers,

Darren