No easy way to figure out nuget.org service index url

[mishra14]

Gallery home page or any top level links within don't seem to point to the right URL to be used, to consume nuget.org as a package source.

If I delete nuget.org as a source once, it is difficult to get back to using it without doing google searches, which seems like a bad user experience.

[mishra14]

cc: @joelverhagen

[skofman1]

@anangaur , @karann-msft , what do you think?

[scottbommarito]

We used to have the feed urls on the homepage before the site redesign. I liked having them there and I think we should bring them back. It especially made it easy for DEV/INT, where searching on Google won't help you.

[nkolev92]

This seems like a simple change, can we please add it?

Customers have attempted to use nuget.org as a url: https://github.com/NuGet/Home/issues/12976.