✨ Make contributor avatar/username clickable to GitHub profile

[0GiS0]

✨ Feature Request

Currently, the contributor avatar and username displayed on each repository card are not interactive. Users should be able to click on them to navigate to the contributor's public GitHub profile.

📍 Current Behavior

• Avatar and @username are displayed on each card
• They are not clickable
• No way to visit the contributor's GitHub profile directly

✅ Expected Behavior

• Clicking the avatar or username opens the contributor's GitHub profile
• Link opens in a new tab (target="_blank")
• Visual feedback on hover (cursor pointer, subtle highlight)
• Proper accessibility attributes (rel="noopener noreferrer")

📋 Acceptance Criteria

• Avatar image is wrapped in a link to https://github.com/{username}
• Username text is also clickable
• Hover state provides visual feedback
• Link opens in new tab with proper security attributes
• Click doesn't interfere with the card's main link to the repository

🎨 Design Consideration

The card itself links to the repository, so care should be taken to stop event propagation when clicking the contributor link to avoid navigating to both the repo and the profile.