load glb files in editor time

Hi,
I have glb files in local folders within the Asset directory that I would like to load during editor time by using a custom button and text field.
Is that possible through the importer ?

Start by tracing the importer and Unity editor entry points for assets in local Asset-directory folders. Determine whether a custom button and text field can trigger loading GLB files during editor time, and define done as a documented or implemented way to perform that workflow.

Written by the indexing model from the issue text.