feat(Table): add rowClass to columns list

[galexrt]

🔗 Linked issue

❓ Type of change

• [x] 📖 Documentation (updates to the documentation or readme)
• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [ ] 👌 Enhancement (improving an existing functionality)
• [x] ✨ New feature (a non-breaking change that adds functionality)
• [ ] 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• [ ] ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

This allows the columns list to specify a class to be set on the rows columns.

Implements the idea from my comment here: https://github.com/nuxt/ui/issues/527#issuecomment-2041438113

📝 Checklist

• [x] I have linked an issue or discussion.
• [x] I have updated the documentation accordingly.

I could add more info to the documentation about this feature if wanted.