feat(dojo-core): add fixed array support in models

[bengineer42]

Description

Related issue

Fixes #2785

Tests

• [ ] Yes
• [ ] No, because they aren't needed
• [ ] No, because I need help

Added to documentation?

• [ ] README.md
• [ ] Dojo Book
• [ ] No documentation needed

Checklist

• [ ] I've formatted my code (scripts/prettier.sh, scripts/rust_fmt.sh, scripts/cairo_fmt.sh)
• [ ] I've linted my code (scripts/clippy.sh, scripts/docs.sh)
• [ ] I've commented my code
• [ ] I've requested a review after addressing the comments

Summary by CodeRabbit

Release Notes

• New Features

  • Added support for fixed-size arrays in data models and type introspection.
  • Enhanced type system to handle fixed-size array layouts and representations.

• Technical Improvements

  • Expanded introspection capabilities for complex data structures.
  • Improved code generation for fixed-size array handling.
  • Added new utility functions for processing fixed-size arrays.

• Testing

  • Introduced new test cases for fixed-size array models and introspection.
  • Validated fixed-size array functionality across multiple components.

[coderabbitai[bot]]

Walkthrough

Ohayo, sensei! This pull request introduces comprehensive support for fixed-size arrays across the Dojo framework. The changes span multiple components, including core introspection mechanisms, storage layouts, and compilation utilities. The modifications enable fixed-size arrays to be used in models, with new implementations in the type system, layout handling, and derive macros to support this feature seamlessly.

Changes

File	Change Summary
core-cairo-test/src/tests/meta/introspect.cairo	Added new structs and enums with fixed-size arrays for testing.
core-cairo-test/src/tests/model/model.cairo	Introduced ModelWithFixedArray and corresponding test function.
core/src/meta/introspect.cairo	Added FixedArray variant to Ty enum and Introspect implementation.
core/src/meta/layout.cairo	Introduced FixedArray variant to Layout enum.
core/src/storage/layout.cairo	Added methods for handling fixed-array layouts.
lang/Cargo.toml	Added regex dependency.
lang/src/derive_macros/introspect/*	Enhanced type, layout, and size handling for fixed-size arrays.

Assessment against linked issues

Objective	Addressed	Explanation
Support fixed-sized arrays in models [#2785]	✅

Possibly related PRs

• #2874: Potential connection to gas oracle and settlement layer configurations.
• #2875: Possible indirect relation through ChainSpec configuration refactoring.

Sensei, the pull request comprehensively implements fixed-size array support across the Dojo framework, meeting the primary objective of enabling these arrays in models!

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[glihm]

Will remove this since it may be some work to adjust, and it is not the priority at the moment.

@remybar @bengineer42 feel free to reopen or a new one once we have the new proc macros API released.