Fix templates directory structure to produce correct nupkg output

templates/Microsoft.DotNet.Web.Spa.ProjectTemplates/angular/Startup.cs

@@ -0,0 +1,58 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.SpaServices.Webpack;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace AngularSpa
+{
+    public class Startup
+    {
+        public Startup(IConfiguration configuration)
+        {
+            Configuration = configuration;
+        }
+
+        public IConfiguration Configuration { get; }
+
+        // This method gets called by the runtime. Use this method to add services to the container.
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddMvc();
+        }
+
+        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
+        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
+        {
+            if (env.IsDevelopment())
+            {
+                app.UseDeveloperExceptionPage();
+                app.UseWebpackDevMiddleware(new WebpackDevMiddlewareOptions
+                {
+                    HotModuleReplacement = true
+                });
+            }
+            else
+            {
+                app.UseExceptionHandler("/Home/Error");
+            }
+
+            app.UseStaticFiles();
+
+            app.UseMvc(routes =>
+            {
+                routes.MapRoute(
+                    name: "default",
+                    template: "{controller=Home}/{action=Index}/{id?}");
+
+                routes.MapSpaFallbackRoute(
+                    name: "spa-fallback",
+                    defaults: new { controller = "Home", action = "Index" });
+            });
+        }
+    }
+}