feat(taps): add optional sanitization for JSON-serializable documents

[mporracindie]

This pull request introduces a new feature for sanitizing MongoDB documents to ensure JSON-serializability, along with associated updates to the codebase. The key changes include adding a sanitize_documents configuration option, implementing a utility function for document sanitization, and updating the data processing logic to use this feature when enabled.

New Feature: Document Sanitization

• README.md: Updated documentation to include the new sanitize_documents configuration option, detailing its purpose and behavior.
• tap_mongodb/tap.py: Added the sanitize_documents configuration option to the tap's schema, with a default value of False.
• tap_mongodb/utils.py: Introduced the sanitize_doc utility function, which converts MongoDB-specific types (e.g., ObjectId, UUID, datetime, Binary) to JSON-serializable equivalents.

Code Updates for Sanitization Integration

• tap_mongodb/streams.py: Modified the get_records method to apply the sanitize_doc function to documents when the sanitize_documents configuration is enabled. This ensures that all extracted data is JSON-compatible. [1] [2]
• tap_mongodb/streams.py: Imported the sanitize_doc function to enable its use in the get_records method.