feat: add PayPear payment provider to cabinet frontend

- Payment method label and icon (amber gradient)
- Admin settings tree entry for PAYPEAR category
- Locale strings for ru, en, zh, fa

src/constants/paymentMethods.ts

@@ -15,5 +15,6 @@ export const METHOD_LABELS: Record<string, string> = {
   kassa_ai: 'Kassa AI',
   riopay: 'RioPay',
   severpay: 'SeverPay',
+  paypear: 'PayPear',
   manual: 'Ручное пополнение',
 };