Introduce Development Tooling for Rust Project

[ry2x]

Summary

To improve code quality, security, and maintainability, we should introduce standard Rust development tools and clearly define them as part of the development environment.

Proposed Tools

• rustfmt – code formatting
• Clippy – linting and best practices
• cargo-deny – dependency and license checks
• Git hooks or CI/CD – automated checks
• Criterion – performance benchmarking (for learning purposes)

Toolchain

• Add rust-toolchain.toml to explicitly require dev tools such as:
  • rustfmt
  • clippy

Benefits

• Consistent code style
• Early detection of issues
• Safer dependency management
• Reproducible development environment