Add VSConfig file (dotnet#6622)

* Add VSConfig file

* Trim it

Author: cartermp

.vsconfig

@@ -0,0 +1,30 @@
+{
+  "version": "1.0",
+  "components": [
+    "Microsoft.VisualStudio.Component.CoreEditor",
+    "Microsoft.VisualStudio.Workload.CoreEditor",
+    "Microsoft.VisualStudio.Component.NuGet",
+    "Microsoft.Net.Component.4.6.1.TargetingPack",
+    "Microsoft.VisualStudio.Component.Roslyn.Compiler",
+    "Microsoft.VisualStudio.Component.Roslyn.LanguageServices",
+    "Microsoft.VisualStudio.Component.FSharp",
+    "Microsoft.Net.Core.Component.SDK.2.1",
+    "Microsoft.NetCore.ComponentGroup.DevelopmentTools.2.1",
+    "Microsoft.Net.Component.4.7.2.SDK",
+    "Microsoft.Net.Component.4.7.2.TargetingPack",
+    "Microsoft.Net.ComponentGroup.DevelopmentPrerequisites",
+    "Microsoft.Component.MSBuild",
+    "Microsoft.VisualStudio.Component.TextTemplating",
+    "Microsoft.VisualStudio.Component.SQL.CLR",
+    "Microsoft.VisualStudio.Component.ManagedDesktop.Core",
+    "Microsoft.Net.Component.4.6.TargetingPack",
+    "Component.Microsoft.VisualStudio.LiveShare",
+    "Microsoft.VisualStudio.Component.ManagedDesktop.Prerequisites",
+    "Microsoft.VisualStudio.Component.Debugger.JustInTime",
+    "Microsoft.VisualStudio.Component.FSharp.Desktop",
+    "Microsoft.VisualStudio.Workload.ManagedDesktop",
+    "Microsoft.VisualStudio.Component.VSSDK",
+    "Microsoft.VisualStudio.ComponentGroup.VisualStudioExtension.Prerequisites",
+    "Microsoft.VisualStudio.Workload.VisualStudioExtension"
+  ]
+}