Is your feature request related to a problem? Please describe

It would be nice to have an additional option when downloading BlackBox, other then download only.
With a lot of FC that use 8-16MB of memory you have to download and then delete logs. This is currently a manual (forced) way to download BlackBox logs. Could be very useful to leave to the user a second option download and erase in an automatic way, with a simple selection box.
This of course needs a verification of the bytes downloaded, to avoid the risk to download logs with result of a probably corrupted or incomplete log.

Describe the solution you'd like

Have an option to download and erase blackbox logs in one step.

Describe alternatives you've considered

Alternative is in modes (delete blackbox with a switch) but this option is rarely used i guess, users want to see the logs downloaded and erased. Modes option is more for user that wants to erase blackbox due to a wrong test flight.

Other information

N/A