refactor: apply default vs transform to xproj

refactor(spa-services): clean code

refactor(node-services): clean code, extract classes nto separate files

refactor(angular-services): prime cache cleanup

src/Microsoft.AspNetCore.SpaServices/Prerendering/RenderToStringResult.cs

@@ -0,0 +1,10 @@
+using Newtonsoft.Json.Linq;
+
+namespace Microsoft.AspNetCore.SpaServices.Prerendering
+{
+    public class RenderToStringResult
+    {
+        public JObject Globals { get; set; }
+        public string Html { get; set; }
+    }
+}