Add .vsconfig for automatic VS features installation

Author: NN---

.vsconfig

@@ -0,0 +1,22 @@
+{
+  "version": "1.0",
+  "components": [
+    "Microsoft.Component.MSBuild",
+    "Microsoft.Net.Component.3.5.DeveloperTools",
+    "Microsoft.Net.Component.4.6.1.SDK",
+    "Microsoft.Net.Component.4.6.1.TargetingPack",
+    "Microsoft.Net.Component.4.7.1.SDK",
+    "Microsoft.Net.Component.4.7.1.TargetingPack",
+    "Microsoft.Net.Component.4.7.2.SDK",
+    "Microsoft.Net.Component.4.7.2.TargetingPack",
+    "Microsoft.Net.Component.4.7.SDK",
+    "Microsoft.Net.Component.4.7.TargetingPack",
+    "Microsoft.Net.Component.4.8.SDK",
+    "Microsoft.Net.Component.4.8.TargetingPack",
+    "Microsoft.Net.Core.Component.SDK.2.1",
+    "Microsoft.NetCore.Component.Runtime.3.1",
+    "Microsoft.NetCore.Component.Runtime.5.0",
+    "Microsoft.VisualStudio.Component.NuGet",
+    "Microsoft.VisualStudio.Component.Roslyn.Compiler"
+  ]
+}

CodeJam.sln

@@ -1,11 +1,12 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.27004.2002
+# Visual Studio Version 17
+VisualStudioVersion = 17.1.31903.286
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{1A7A9586-8C07-449F-8FB0-AD469230CF67}"
 	ProjectSection(SolutionItems) = preProject
 		.editorconfig = .editorconfig
+		.vsconfig = .vsconfig
 		appveyor.doc.yml = appveyor.doc.yml
 		appveyor.yml = appveyor.yml
 		CodeJamDoc.shfbproj = CodeJamDoc.shfbproj