Generate Schema from OpenAPI spec and support multiple API versions

[kdhillon-stripe]

• Introduce OpenAPI-driven schema generation for Stripe data.
• Add a parser pipeline (specParser) that reads Stripe OpenAPI schemas and infers runtime table/column definitions.
• Add SQL generation (postgresAdapter) and wire it into migration flow so schema can be created/updated from spec.
• Ties schema generation to sync runtime config (resourceRegistry) so we only generate tables we actually use (See Future Work below to improve this).
• Keeping compatibility columns + internal sync metadata handling to make rollout safe with existing runtime expectations.

Future work:

• Support for v2 objects (thin events).
  • Pagination for v2 objects are also different
• Support for customizing postgres schema name

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