Vehicle DATA Specification

This is a consolidated view that merges some ideas from different approaches that have been presented so far to improve and evolve VSS into a more expressive model.

• Update the vspec2graphql exporter in vss-tools.
  • Use graphene pydantic for proper data validation
  • Use click package for up-to-date CLI
  • Restructure the resulting GraphQL schema
    • Change the mapping
      from (current): (VSS leaf → Specific GraphQL type)
      to (desired): VSS leaf → Specific field within a GraphQL type, where a type is then the immediate parent branch)
    •  

• Create a graphql2vspec mechanism for backward compatibility