Set up automated workflow to update tracking data on new model releases

[neubig]

Summary

Create a GitHub Actions workflow that can be triggered to automatically update tracking data when new models are released.

Requirements

• Workflow can be manually triggered with model_id and release_date inputs
• Automatically queries SDK, frontend, and index-results repos for support timestamps
• Updates the individual model JSON and all_models.json
• Opens a PR with the changes for review

Optional Enhancements

• Scheduled run to check for newly supported models
• Slack/Discord notification when new model support is detected

[linear]

AGE-752