Load and save payment targets

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/nipA3/PaymentTargetsEvent.kt

@@ -20,6 +20,7 @@
  */
 package com.vitorpamplona.quartz.experimental.nipA3
 
+import com.vitorpamplona.quartz.nip01Core.core.Address
 import com.vitorpamplona.quartz.nip01Core.core.BaseReplaceableEvent
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
 import com.vitorpamplona.quartz.nip01Core.signers.NostrSigner
@@ -36,6 +37,8 @@ class PaymentTargetsEvent(
     companion object {
         const val KIND = 10133
 
+        fun createAddress(pubKey: HexKey): Address = Address(KIND, pubKey, FIXED_D_TAG)
+
         suspend fun updatePaymentTargets(
             earlierVersion: PaymentTargetsEvent,
             targets: List<PaymentTarget>,