docs: update benchmark charts and index for improved clarity and usab…

[TKorr]

…ility

• Refactored charts.html to enhance the loading mechanism and improve the user experience for both JavaScript-enabled and disabled environments.
• Updated the Content Security Policy (CSP) for better security compliance and maintainability.
• Revised the benchmark index to improve the organization of policy performance metrics, ensuring a clearer comparison across different cache policies.
• Enhanced documentation to reflect changes in the charts structure and benchmark results, facilitating better understanding for users.

These updates improve the overall clarity and usability of benchmark results, making it easier for users to interpret performance metrics.

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