Enhance Activity Suspension and Monitoring with New Features

[jujusb]

• Add tracking of suspension and resumed of any activity (survey, manual, gameplay), with reason unload page, unfocus windows, change tabs, etc...
• The SIMVA backend for frontend has been enhanced with several new features to improve activity suspension and monitoring.
• These include adding reasons for suspension, tracking focus events, and detecting tab changes.
• Additionally, the system now send a suspend trace for the activity when the page is unloaded.
• These changes are expected to provide more insights and control over learning activities.
• The enhancements aim to improve the overall management and tracking of user activities.

[imartinezortiz]

@Jubsub From technical point of view seems sound, but I do not see why this is needed. Let's discuss it