Define complete request/response models

[rkorsak]

Feature Request

The web API uses Pydantic models for requests and responses, but these don't play well with our lower-level serializable types. The result is our use of Any types for the majority of our models, which kills most of the data validation benefits that we should get from Pydantic and makes our OpenAPI spec much weaker.

We should provide complete models all the way down, either by defining new Pydantic models or finding a working strategy for including our serializable electionguard-python models.

[keithrfung]

This card will need to be revisited after 1.3.0 version of electionguard-python. Going to close since this will be less true.