Add Ultralytics actions workflow in format.yml

[UltralyticsAssistant]

This pull request adds a workflow to automatically format code and documentation.

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Added automated code and documentation formatting workflow to the Ultralytics iOS Podspecs repository.

📊 Key Changes

• Created a new GitHub Actions workflow named Ultralytics Actions.
• The workflow is triggered on push and pull request events to the main and master branches.
• The workflow runs on the latest Ubuntu runner available.
• Conducts automated formatting through a step that uses the ultralytics/actions at the main branch.

🎯 Purpose & Impact

• Ensures consistent code and documentation formatting across contributions.
• Enhances the readability and maintainability of the repository.
• Impacts developers by automating a typically manual process, saving time and reducing the likelihood of formatting errors. 🔄