Chrome Extension for Visa Appointment Tracker

I need a Chrome extension that allows users to log in to www.usvisascheduling.com with their username and password. The extension will check for available US visa appointment dates every minute and update a public crowdsourcing website with this information.

Key requirements:
- Username and password login
- No user alerts (notifications or email)
- Check for updates every minute

Ideal skills and experience:
- Experience with Chrome extension development
- Familiarity with web scraping and automation
- Knowledge of handling username/password logins securely