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/Webpack/WebpackDevMiddlewareOptions.cs

@@ -1,7 +1,9 @@
-namespace Microsoft.AspNetCore.SpaServices.Webpack {
-    public class WebpackDevMiddlewareOptions {
+namespace Microsoft.AspNetCore.SpaServices.Webpack
+{
+    public class WebpackDevMiddlewareOptions
+    {
         public bool HotModuleReplacement { get; set; }
         public bool ReactHotModuleReplacement { get; set; }
         public string ConfigFile { get; set; }
     }
-}
+}