Detect storage space issues during restore.

core-util/src/main/java/org/signal/core/util/billing/BillingPurchaseResult.kt

@@ -14,6 +14,7 @@ import kotlin.time.Duration.Companion.milliseconds
  */
 sealed interface BillingPurchaseResult {
   data class Success(
+    val purchaseState: BillingPurchaseState,
     val purchaseToken: String,
     val isAcknowledged: Boolean,
     val purchaseTime: Long,

core-util/src/main/java/org/signal/core/util/billing/BillingPurchaseState.kt

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2024 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.signal.core.util.billing
+
+/**
+ * BillingPurchaseState which aligns with the Google Play Billing purchased state.
+ */
+enum class BillingPurchaseState {
+  UNSPECIFIED,
+  PURCHASED,
+  PENDING
+}