Pydantic-based data models for Sigstore.
These models mirror the subset of the protobuf-specs that are used by the sigstore-python library.
- Providing high-quality, type-safe data models to sigstore-python.
- Matching Sigstore's (mostly protobuf influenced) JSON serialization format.
- Supporting protobuf serialization/deserialization.
- Doing anything besides mirroring a subset of the types in protobuf-specs.