Add project files.

.vsconfig

@@ -0,0 +1,16 @@
+{
+  "version": "1.0",
+  "components": [
+    "Microsoft.Component.MSBuild",
+    "Microsoft.NetCore.Component.Runtime.7.0",
+    "Microsoft.NetCore.Component.SDK",
+    "Microsoft.VisualStudio.Component.ManagedDesktop.Core",
+    "Microsoft.VisualStudio.Component.ManagedDesktop.Prerequisites",
+    "Microsoft.VisualStudio.Component.NuGet",
+    "Microsoft.VisualStudio.Component.Windows10SDK.19041",
+    "Microsoft.VisualStudio.Component.Windows10SDK",
+    "Microsoft.VisualStudio.ComponentGroup.MSIX.Packaging",
+    "Microsoft.VisualStudio.ComponentGroup.WindowsAppSDK.Cs",
+    "Microsoft.VisualStudio.Workload.ManagedDesktop"
+  ]
+}