feat: add translation

lib/mv_web/live_user_auth.ex

@@ -37,6 +37,9 @@ defmodule MvWeb.LiveUserAuth do
   end
 
   def on_mount(:live_no_user, _params, _session, socket) do
+    Gettext.put_locale(MvWeb.Gettext, "de")
+    {:cont, assign(socket, :locale, "de")}
+
     if socket.assigns[:current_user] do
       {:halt, Phoenix.LiveView.redirect(socket, to: ~p"/")}
     else