Add PayU settings and dynamic QR generation

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

@@ -0,0 +1,34 @@
+package com.android.trisolarisserver.controller.dto
+
+import java.util.UUID
+
+data class PayuSettingsUpsertRequest(
+    val merchantKey: String,
+    val salt32: String? = null,
+    val salt256: String? = null,
+    val baseUrl: String? = null,
+    val useSalt256: Boolean? = null
+)
+
+data class PayuSettingsResponse(
+    val propertyId: UUID,
+    val merchantKey: String,
+    val baseUrl: String,
+    val useSalt256: Boolean,
+    val hasSalt32: Boolean,
+    val hasSalt256: Boolean
+)
+
+data class PayuQrGenerateRequest(
+    val customerName: String? = null,
+    val customerEmail: String? = null,
+    val customerPhone: String? = null,
+    val expiryMinutes: Int? = 30
+)
+
+data class PayuQrGenerateResponse(
+    val txnid: String,
+    val amount: Long,
+    val currency: String,
+    val payuResponse: String
+)