CSharp\Extensibility\Command Command.vstemplate Command.cs VisualStudio.Extensibility Command Command for a VisualStudio.Extensibility extension CSharp 10 __TemplateIcon.ico CSharp\Extensibility\ToolWindow ToolWindow.vstemplate ToolWindow.cs VisualStudio.Extensibility Tool Window Tool Window for a VisualStudio.Extensibility extension CSharp 10 __TemplateIcon.ico