Add ikey trust state

smack-openpgp/src/main/java/org/jivesoftware/smackx/ox/store/definition/OpenPgpTrustStore.java

@@ -59,6 +59,7 @@ public interface OpenPgpTrustStore {
         /**
          * The user didn't yet describe, whether to trust the key or not.
          */
-        undecided
+        undecided,
+        ikey_trusted
     }
 }