Auto-fetch PayU payment link tokens

src/main/kotlin/com/android/trisolarisserver/controller/dto/PayuDtos.kt

@@ -49,7 +49,9 @@ data class PayuQrGenerateResponse(
 
 data class PayuPaymentLinkSettingsUpsertRequest(
     val merchantId: String,
-    val accessToken: String,
+    val clientId: String? = null,
+    val clientSecret: String? = null,
+    val accessToken: String? = null,
     val isTest: Boolean? = null
 )
 
@@ -58,6 +60,8 @@ data class PayuPaymentLinkSettingsResponse(
     val configured: Boolean,
     val merchantId: String?,
     val isTest: Boolean,
+    val hasClientId: Boolean,
+    val hasClientSecret: Boolean,
     val hasAccessToken: Boolean
 )