fix: handle pending status (#42)

Author: galvagnimatteo

src/main/java/com/zextras/carbonio/usermanagement/enumerations/UserStatus.java

@@ -9,5 +9,6 @@ public enum UserStatus {
   MAINTENANCE,
   LOCKED,
   CLOSED,
-  LOCKOUT
+  LOCKOUT,
+  PENDING
 }