load language files from list, and init map language

website/src/routes/+layout.js

@@ -1,8 +1,11 @@
 export const prerender = true;
 
+import { languages } from '$lib/languages';
 import { register, init } from 'svelte-i18n';
 
-register('en', () => import('../locales/en.json'));
+Object.keys(languages).forEach((lang) => {
+    register(lang, () => import(`../locales/${lang}.json`));
+});
 
 init({
     fallbackLocale: 'en',