Autosave Feature Implemented

[vinayakjeet]

WIP(#182 )

This pull request introduces a new autosave feature to the Avogadro application. The feature aims to enhance the user experience by automatically saving the current molecule document at a specified interval of 5 minutes, reducing the risk of data loss in case of unexpected application closure.

The implementation includes setting up an autosave interval with QTimer, determining the autosave directory based on the application data location, and saving the document in the CJSON format. This autosave functionality is careful to activate only if there are unsaved changes, ensuring efficient use of resources and avoiding unnecessary writes. The feature also involves updates to the MainWindow class to incorporate autosave setup and execution logic.

This addition is expected to provide a safety net for users, securing their work without requiring manual intervention for frequent saves.

[vinayakjeet]

Hello maintainers
Introduced an autosave feature in Avogadro to automatically save work every 5 minutes, reducing data loss risk. Contemplating further UI enhancements to indicate autosave status and considering the implementation of a DESTRUCTOR for cleanup. Feedback on logic and suggestions for UI improvements would be appreciated