refactor(utils): add barrel exports

src/utils/index.ts

@@ -0,0 +1,15 @@
+/**
+ * @file Automatically generated by barrelsby.
+ */
+
+export * from "./app-env";
+export * from "./browser-detect";
+export * from "./date";
+export * from "./device_identifier";
+export * from "./facebook-graph";
+export * from "./logger";
+export * from "./platform-detect";
+export * from "./pwa";
+export * from "./result";
+export * from "./storage";
+export * from "./url-launcher-util";