Refactor notification service and enhance user management features

- Replaced legacy payment notification functions with a new NotificationService for improved code organization and maintainability.
- Updated user management handlers to utilize the new notification system for payment confirmations.
- Enhanced user card formatting with localized labels for better clarity and user experience.
- Introduced context management for the PanelApiService to ensure proper session handling.
- Updated localization files to include new labels and messages for user management and notifications.

bot/handlers/admin/promo_codes.py

@@ -266,7 +266,8 @@ async def process_promo_set_validity(callback: types.CallbackQuery,
 async def process_promo_validity_days_handler(message: types.Message,
                                              state: FSMContext,
                                              i18n_data: dict,
-                                             settings: Settings):
+                                             settings: Settings,
+                                             session: AsyncSession):
     current_lang = i18n_data.get("current_language", settings.DEFAULT_LANGUAGE)
     i18n: Optional[JsonI18n] = i18n_data.get("i18n_instance")
     if not i18n: