Sync script does not handle empty organizations

Currently, when there are no repos in an organization, no teams are setup and users are not invited to the org.

While this made sense as users are anyway not able to create repos, the situation has changed a bit with the self-service. Once the .eclipsefdn repo is setup, users can actually request repos via the repo, however the .eclipsefdn repo can not be setup correctly yet as no teams exists. Here is some example:

https://github.com/eclipse-oniro4openharmony

Maybe the logic in the sync script could be changed such that teams and users are created / invited outside the loop over the repos.