As I did not find any solution to synchronize vCenter tags with NSX-T, I created a Ansible Role that creates tags in vCenter and them synchronize those tags with NSX-T. Only tags with associated VMs are created in NSX-T though. But it is possible to schedule a playbook with this role so that you can synchronize the tags periodically and manage tags association directly in vCenter.

You can check more details in Ansible Galaxy, Role vinplima.nsx_vsphere_tags (https://galaxy.ansible.com/vinplima/nsx_vsphere_tags).