"Add package" should have an option to search and add prerelease packages

[tsibelman]

subj

[Korporal]

Ahh I didn't know there was an 'Add Package' and this partly answers my recent question:

https://github.com/fsprojects/Paket.VisualStudio/issues/118

[Korporal]

I'd like to suggest this feature be name 'Add NuGet Package' and consider the converse action 'Remove NuGet Package'...