Feature request: Add handler to know that user started a bug report

[michallaskowski]

We would like to know when user started the process of opening a bug report, to fetch additional data from connected hardware to attach it to the bug report.

Related to #480 - if not having an additional handler, would like to have a possibility to asynchronously fetch the data before sending the report.

[stale]

This issue has been automatically marked as stale due to inactivity. It will be closed if no further activity occurs. Thank you for your contributions.