Subject Derive Macro

A derive macro for implementing the Subject trait in the fuel-streams ecosystem

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# Subject Derive Macro This is a macro that is part of the [fuel-streams-macros](https://github.com/fuellabs/data-systems/tree/main/crates/fuel-streams-macros) crate. It provides functionality for deriving the `Subject` trait on structs. For more information and usage examples, please refer to the [fuel-streams-macros documentation](https://docs.rs/fuel-streams-macros/).