Version 2.0.0 changes the extension from refreshing Moodle tabs to using Moodle's built-in session keepalive request.

What's new:
- Keeps the Moodle session active without reloading tabs
- Uses one open Moodle tab as the session source
- Sends Moodle's core_session_touch request periodically
- Reduces unnecessary page reloads and interruptions