docs: refine benchmark artifacts management and add chart styles/scripts

[TKorr]

• Updated .gitignore to better manage benchmark artifacts, ensuring that necessary files for documentation are included while excluding raw run artifacts.
• Introduced charts.css and charts.js to enhance the visual representation of benchmark results, improving user experience and compliance with security standards.
• The new styles and scripts support a structured and responsive layout for displaying benchmark data, facilitating better interpretation of performance metrics.

These changes improve the organization of benchmark documentation and enhance the usability of visualized results.

Description

Related Issue

Fixes #

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to change)
• 📝 Documentation update
• 🔧 Refactoring (no functional changes)
• ⚡ Performance improvement
• 🧪 Test addition or modification

How Has This Been Tested?

• Unit tests
• Integration tests
• Manual testing

Test environment:

• OS:
• Rust version:

Checklist

• My code follows the project's coding standards
• I have run cargo fmt and cargo clippy
• I have added tests for my changes
• All new and existing tests pass (cargo test)
• I have updated the documentation as needed
• I have added an entry to CHANGELOG.md (if applicable)

Screenshots (if applicable)

Additional Notes