Add annotation_type to our database

[dondi]

From #1120, we have identified that we should capture the annotation_type field

[kdahlquist]

This should be for both PPI and GRN interactions. I can envision a feature where users can select whether they want to look at just manually curated, just high-throughput, or both types of interactions on GRNs and PPIs that are loaded from the database.