[Feature Request] Impl std::error::Error for fondant::FondantError

[unknownue]

To cast high level error(e.g. the application level error) to lower level error(e.g. fondant::FondantError) for crate like thiserror, it's necessary to implement std::error::Error trait.

[oppiliappan]

Done! As of fondant v0.1.2, FondantError implements std::error::Error and displays useful text messages on eprintln!.

Thank you for the suggestion!