feat(scripts,catalog): Add JSON schema to dbt sources.yml converter script and HubSpot schemas

[devin-ai-integration]

This PR adds:

1. A utility script that converts JSON schema files to dbt sources.yml format

   • Converts JSON schema types to dbt column types
   • Preserves descriptions from JSON schema
   • Handles format-specific type conversions (e.g., date-time to timestamp)
   • Processes multiple schema files into a single sources.yml

2. HubSpot schemas from the Airbyte repository

   • Added all schema files from airbyte-integrations/connectors/source-hubspot/source_hubspot/schemas/
   • Placed in catalog/hubspot/airbyte-source/schemas/

Link to Devin run: https://app.devin.ai/sessions/e0ac517169654f64a5e91f53fa622b7b
Requested by: Aaron

[devin-ai-integration]

🤖 Devin AI Engineer

Original prompt from Aaron:

@Devin - Are there any tools that can auto-generate a dbt sources.yml file from a given json schema or set of json schemas?

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