Add a bruteforce status endpoint

[Maxi Herczegh]

Describe the feature you would like
There should be a status endpoint for bruteforce at /bruteforce/status. It should return whether the service performs a bruteforce attack. If so, additionally how long it has been doing it and the target service and device.

Is your feature request related to a problem? Please describe.
Now you can't find out what the bruteforce service is doing at the moment.

Additional context
With the split between the services it is now better to implement.