feat: add RollyPay payment provider to cabinet frontend

- Payment method label and icon (green gradient, RP)
- Admin settings tree entry for ROLLYPAY category
- Locale strings and descriptions for ru, en, zh, fa

src/locales/en.json

@@ -652,6 +652,9 @@
       },
       "paypear": {
         "description": "Pay via PayPear"
+      },
+      "rollypay": {
+        "description": "Pay via RollyPay (SBP)"
       }
     },
     "transactionHistory": "Transaction History",
@@ -1960,6 +1963,7 @@
         "payments_riopay": "RioPay",
         "payments_severpay": "SeverPay",
         "payments_paypear": "PayPear",
+        "payments_rollypay": "RollyPay",
         "subs_core": "Core",
         "subs_trial": "Trial",
         "subs_pricing": "Pricing",