Redesign Authors & Maintainers section with ranked leaderboard UI

[Ajaypanchal4326]

✨ UI Improvement: Authors & Maintainers

This PR modernizes the Authors & Maintainers section to make it more
informative, readable, and useful in both HTML and PDF reports.

🔍 Problem

• The previous avatar-only layout provided limited value, especially in PDF output.
• There was no clear way to identify top contributors or understand relative impact.

✅ Solution

This PR introduces a ranked leaderboard-style layout:

• Authors are sorted by occurrence count (descending)
• Clear ranking (1, 2, 3, …) based on contribution frequency
• Top contributors are visually highlighted
• Avatars are preserved for visual context
• No JavaScript added, no data model changes

🎯 Key Improvements

• 🏆 Ranked leaderboard for quick contributor comparison
• 📄 Improved PDF readability (list-based, no hover dependency)
• 🎨 Modern, clean UI with clear hierarchy
• 🔒 Presentation-only change (HTML + CSS)

🧠 Ranking Logic

Authors are ranked by their occurrence count in dependencies:

• Higher count ⇒ higher rank
• Sorting is handled at the template level for presentation clarity

🖼️ Preview

📁 Files Changed

• views/template.html
• public/css/style.css

🧪 Testing

• npm run build
• Verified in HTML preview
• Verified PDF output

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Feedback and suggestions are welcome 🙌