Features: 1) Add i18n support with multiple locales and default locale in next.config;

Fixes: 1) Add missing import for useRouter in index.tsx;

Extra: n/a;

storefront/next.config.ts

@@ -1,7 +1,30 @@
 import type {NextConfig} from "next";
 
 const nextConfig: NextConfig = {
-  /* config options here */
+  i18n: {
+    locales: [
+        'en-gb',
+        'ar-ar',
+        'cs-cz',
+        'da-dk',
+        'de-de',
+        'en-us',
+        'es-es',
+        'fr-fr',
+        'hi-in',
+        'it-it',
+        'ja-jp',
+        'kk-kz',
+        'nl-nl',
+        'pl-pl',
+        'pt-br',
+        'ro-ro',
+        'ru-ru',
+        'zh-hans'
+    ],
+    defaultLocale: 'en-gb',
+  },
 };
 
+
 export default nextConfig;

storefront/src/pages/index.tsx

@@ -1,6 +1,7 @@
 import {apolloClient} from 'graphql/apolloClient';
 import {GET_PRODUCTS} from 'graphql/queries/getProducts';
 import {GetStaticProps} from 'next';
+import {useRouter} from "next/router";
 
 export const getStaticProps: GetStaticProps = async () => {
     const {data} = await apolloClient.query({