Add GCMD phenomena for each DOI

[CarsonDavis]

Update

I think we are already storing this in the database here: https://github.com/NASA-IMPACT/admg-backend/blob/dev/data_models/models.py#L1011

Overview

When DOIs are currently brought into the system, certain metadata fields are ingested. We would like to add gcmd phenomena to that list of metadata. To do this we will need

• [ ] determine which CMR fields to bring in
• [ ] determine the format of the fields (list/str/uuid/etc)
• [ ] add necessary holding field to the data_models
• [ ] make the migration file
• [ ] update the doi matcher to extract and add these fields

[Tammo-Feldmann]

It turned out that we already had the necessary field for CMR keywords in the database.