Ontologise preservation_storage methods

[ESapenaVentura]

For which schema is a change/update being suggested?

I would like to request an update to the preservation_storage.json module schema.

What should the change/update be?

I would like to ontologise the fields preservation_method and storage_methods according to the discussion provided in the HCAO repository

This update constitutes a major change to the schema(s) it affects and a probable migration of all the biomaterials with this module in the system.

Why is the change requested?

The field is currently an enum, with no clear guidelines on some of the values first selected. We want to ontologise the field in order to be able to expand more easily/sustainably and to provide with better quality metadata