Add next-intl to internationalize our project

i18n/routing.ts

@@ -0,0 +1,9 @@
+import { defineRouting } from "next-intl/routing";
+
+export const routing = defineRouting({
+  // A list of all locales that are supported
+  locales: ["en", "de", "ru"],
+
+  // Used when no locale matches
+  defaultLocale: "en",
+});