feat: add sales_stats RBAC permission section to frontend

- Update route guard and menu item to use sales_stats:read
- Add sales_stats:read to marketer preset
- Add i18n translations for sales_stats section (ru, en, fa, zh)

src/locales/ru.json

@@ -3391,6 +3391,7 @@
           "users": "Пользователи",
           "tickets": "Тикеты",
           "stats": "Статистика",
+          "sales_stats": "Статистика продаж",
           "broadcasts": "Рассылки",
           "tariffs": "Тарифы",
           "promocodes": "Промокоды",