Add method to get the list of offers

client/android/utils/src/main/kotlin/ErrorCode.kt

@@ -0,0 +1,11 @@
+package org.amnezia.vpn.util
+
+// keep synchronized with client/core/defs.h error_code_ns::ErrorCode
+object ErrorCode {
+    const val BillingError = 1300
+    const val BillingGooglePlayError = 1301
+    const val BillingUnavailable = 1302
+    const val SubscriptionAlreadyOwned = 1303
+    const val SubscriptionUnavailable = 1304
+    const val BillingNetworkError = 1305
+}