(origin visit update objects as first-citizen objects in swh model)
(pairing with @vlorentz)
currently:
- [x] in-memory implementation
- [x] pg storage implementation
- [x] cassandra implementation
- [x] sql migration script
- [x] Land D2880 (to make those tests go green here)
- [x] rework the perimeter to only include the origin-visit-update changes
TODO:
- [ ] Try to split this into multiple diffs (tests won't be green though)?
Expectations:
- tests failure since it needs a model adaptation (D2880)
Related to T2310
Related to D2880