feat(frontend): main menu lists accounts with their avatars, switching opens the last chat of that account

frontend/src/lib/i18n/messages.ts

@@ -1,8 +1,12 @@
+import { account } from "#lib/i18n/messages/account.js";
 import { common } from "#lib/i18n/messages/common.js";
+import { menu } from "#lib/i18n/messages/menu.js";
 import { settings } from "#lib/i18n/messages/settings.js";
 
 export const messages = {
+  ...account,
   ...common,
+  ...menu,
   ...settings,
 };