Fix/update model insert

[sophie-daintta]

Context

insert_model currently only hashes on the parent model’s hashes and nothing else, so you can’t have two different models that work on the same parents.

It also runs with every to_matchbox call with Results, and currently this means you can only do that once before it errors. Adding upserts functionality will fix.

Changes proposed in this pull request

• Add name to list_to_value_ordered_hash in insert_model
• Allows insert_model to upsert when the hash is the same

Guidance to review

• Check you're happy with the new unit tests

Relevant links

• SQLAlchemy postgres upsert documentation

Checklist:

• My code follows the style guidelines of this project
• New and existing unit tests pass locally with my changes

[wpfl-dbt]

LGTM