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/en.json

@@ -2843,6 +2843,7 @@
           "users": "Users",
           "tickets": "Tickets",
           "stats": "Statistics",
+          "sales_stats": "Sales statistics",
           "broadcasts": "Broadcasts",
           "tariffs": "Tariffs",
           "promocodes": "Promo codes",

src/locales/fa.json

@@ -2576,6 +2576,7 @@
           "users": "کاربران",
           "tickets": "تیکت‌ها",
           "stats": "آمار",
+          "sales_stats": "آمار فروش",
           "broadcasts": "پیام‌های همگانی",
           "tariffs": "تعرفه‌ها",
           "promocodes": "کدهای تخفیف",

src/locales/ru.json

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

src/locales/zh.json

@@ -2575,6 +2575,7 @@
           "users": "用户",
           "tickets": "工单",
           "stats": "统计",
+          "sales_stats": "销售统计",
           "broadcasts": "广播",
           "tariffs": "套餐",
           "promocodes": "促销码",