feat: add i18n with ttag

assets/i18n/index.ts

@@ -0,0 +1,13 @@
+import {addLocale, useLocale} from 'ttag'
+
+const locale = navigator.language.split('-')[0];
+
+if (locale !== 'en') {
+    fetch(`/locales/${locale}.po.json`).then(response => {
+        if (!response.ok) throw new Error(`Failed to load translations for locale ${locale}`);
+        response.json().then(translationsObj => {
+            addLocale(locale, translationsObj);
+            useLocale(locale);
+        })
+    })
+}