Powershell/PowershellCore in Visual Studio

Hi I received a lot of powershell scripts to add to Visual Studio 2015 (and to source control too)

What are the best tools/Addons for that? POSH Tools?

What about compatibility with other versions of VS and the use of Powershell Core

Are there any tools to use PowershellCore projects in VS? Is it recommended to use VSCode for powershellCore projects?

Thanks ,

JD