Vendor in some models from qcelemental

[bennybp]

Description

This is part of a migration to pydantic v2.

Because of the long-lived nature of the QCFractal database, we can be a bit sensitive to input parameters which are used in de-duplication. So given the changes coming towards QCElemental/schema (version 2, required for pydantic v2), we should copy some of the models we directly import from QCElemental.

These are small models - mostly protocols and provenance. This allows us to be a little more flexible with legacy data while QCElemental goes through the changes.

I have no plans for vendoring the big models, though (Molecule and WavefunctionProperties). Most other imports are for validating/creating those models directly (ie, creating AtomicResult from our SinglepointRecord) so should stay.

Status

• Code base linted
• Ready to go