Move framework stuff into 'fx' folder

samples/react/MusicStore/ReactApp/fx/tracked-fetch.ts

@@ -0,0 +1,13 @@
+import isomorphicFetch from 'isomorphic-fetch';
+import { addTask } from './domain-tasks';
+
+export function fetch(url: string): Promise<any> {
+    // TODO: Find some way to supply the base URL via domain context
+    var promise = isomorphicFetch('http://localhost:5000' + url, {
+        headers: {
+            Connection: 'keep-alive'
+        }
+    });
+    addTask(promise);
+    return promise;
+}