create a crashed client on burp-ui demo

Hello Benjamin,

Is it possible for you to create a fake client demo and try to backup and cancel it then, steps:

1. copy burp.conf client file of existing one to burp_fake.conf
2. Rename cname and certs files to ensure client is different to previous one, but keep same selections.
3. execute burp -c burp_fake.conf -a b wait to phase2 to start and break the client Ctr+C.

That's it, don't setup cron and never finish it.

It could help me to test: https://github.com/pablodav/burp_server_reports/issues/19 And know if it is really working.

The idea is: burp-reports will detect a client in non idle state -> then will try to get backup report to later look at totsize of backup -> if backup is 0 it will be marked as state: never.