Add Discourse https://community.ultralytics.com

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Updated the README.md to include links to the Ultralytics Discord channel and community forums.

📊 Key Changes

• Added a Discord badge linking to the Ultralytics Discord channel.
• Added a Forums badge linking to the Ultralytics community forums.

🎯 Purpose & Impact

• Enhanced Community Engagement: Makes it easier for users to connect with the community and seek support or discuss ideas.
• Better Accessibility: Provides direct access to support channels, aiding both new and experienced users in finding help and resources quickly.