Fix templates directory structure to produce correct nupkg output

templates/Microsoft.AspNetCore.SpaTemplates/knockout/ClientApp/webpack-component-loader.ts

@@ -0,0 +1,25 @@
+import * as ko from 'knockout';
+
+// This Knockout component loader integrates with Webpack's lazy-loaded bundle feature.
+// Having this means you can optionally declare components as follows:
+//   ko.components.register('my-component', require('bundle-loader?lazy!../some-path-to-a-js-or-ts-module'));
+// ... and then it will be loaded on demand instead of being loaded up front.
+ko.components.loaders.unshift({
+    loadComponent: (name, componentConfig, callback) => {
+        if (typeof componentConfig === 'function') {
+            // It's a lazy-loaded Webpack bundle
+            (componentConfig as any)((loadedModule: any) => {
+                // Handle TypeScript-style default exports
+                if (loadedModule.__esModule && loadedModule.default) {
+                    loadedModule = loadedModule.default;
+                }
+
+                // Pass the loaded module to KO's default loader
+                ko.components.defaultLoader.loadComponent!(name, loadedModule as KnockoutComponentTypes.ComponentConfig, callback);
+            });
+        } else {
+            // It's something else - let another component loader handle it
+            callback((null as any) as KnockoutComponentTypes.Definition); // workaround until https://github.com/DefinitelyTyped/DefinitelyTyped/pull/17999
+        }
+    }
+});