recallable vs recallable-macro vs patchable

Traits (`Recallable`, `Recall`, `TryRecall`) and macros for defining Memento pattern types and their state restoration behaviors.

Macro suite for the recallable crate: enables model with #[recallable_model] and automatic trait derives for `Recallable` and `Recall`.

Automatically derive patch types for Rust structs to enable efficient partial updates with zero runtime overhead