[QA][CallForReview][Automation][UNO]Test create and load PageNumber field by UNO API

[dongjun zong]

Hi All,
      I create a script test create, save and load page number field by uno
api, pls help review. The patch can be get from here
https://issues.apache.org/ooo/show_bug.cgi?id=120630

Thanks.
Best Regards!

DongJun Zong