add gpu as flavor option

After deploying openstack and configuring gpu passthrough, I want to be able to see gpus as an option directly from the flavor table not added as a metadata, as shown in the attached table image, how can I achieve this?

Screenshot from 2022-06-22 10-06-58.png https://drive.google.com/file/d/1A1tn1S8JwgOdL0bcjBSaNYq5QSWpjyN4/view?usp=drive_web