Consider deprecating `dotnet vstest`

[Youssef1313]

https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-vstest

The dotnet vstest command is superseded by dotnet test, which can now be used to run assemblies. See dotnet test.

The doc update was made in dotnet/docs#18296 5 years ago. It may be time to retire dotnet vstest?

@nohwnd Do you know of any cases where dotnet vstest is necessary?

[nohwnd]

I don't think it is necessary in any case. Only thing that it makes significantly easier is running vstest.console directly in server mode, without vstest client wrapper. I think this was used previously in omnisharp, but should not be used anymore: https://grep.app/search?f.repo=OmniSharp%2Fomnisharp-roslyn&f.repo.pattern=omni&q=vstest