Implement JSON Serialization for `OptionChain` Using `serde`

[joaquinbejar]

Enable JSON serialization and deserialization for the OptionChain structure using serde::Serialize and serde::Deserialize. This will allow the OptionChain to be easily serialized to and deserialized from JSON, facilitating integration with APIs, databases, and external analytics tools.

By leveraging Rust's serde framework instead of implementing a custom trait, this enhancement will ensure reliable and optimized serialization without additional complexity.

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Tasks

Implementation:

• Derive Serialize and Deserialize for the OptionChain struct.
• Ensure all internal fields, including nested structures such as OptionData and any related types, implement or derive serialization.
• Implement helper methods for convenience:
  • to_json() -> String: Converts an OptionChain instance to a JSON string.
  • from_json(json: &str) -> Result<Self, serde_json::Error>: Deserializes a JSON string into an OptionChain instance.

Testing:

• Implement unit tests for to_json() and from_json().
• Validate serialization and deserialization of the following cases:
  • Nested structures with option data.
  • Scenarios with missing optional fields (e.g., risk_free_rate, dividend_yield).
  • Edge cases such as empty options data and extreme values.

Documentation:

• Update documentation to indicate JSON support for OptionChain.
• Provide examples illustrating JSON serialization and deserialization.

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Additional Notes

• Ensure compatibility with the serde ecosystem for efficient and reliable serialization.
• Maintain data integrity for large option chains.
• Consider JSON formatting options (e.g., compact or human-readable) based on common use cases.

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Labels

enhancement, serialization, json, serde, option-chain, testing, documentation