Display user full name and avatar in comparison table #63

Currently, the comparison table shows only the GitHub username for each user.

We want to improve the UI by displaying:

• The user's full name (if available)
• The user's avatar image

This will make the comparison more visual and user-friendly.

🎯 Expected Behavior

• Show user avatar (profile image)
• Show full name instead of username
• If full name is not available, fallback to username

✅ Tasks

• Update GraphQL query to fetch user name and avatar
• Pass the data to the frontend
• Update UI to display:
  • Avatar image
  • Full name (or username as fallback)
• Style the layout properly (alignment, spacing)

💡 Hints

• GitHub GraphQL API provides:

  • name (full name)
  • avatarUrl (profile image)

• Example:

user(login: $login) {
  name
  avatarUrl
  login
}