Add support for cleaning jobs based on name

[manast]

Is your feature request related to a problem? Please describe.
Sometimes it is useful to only remove jobs of a given name. Names are normally not super useful, but being able to do things like filter by jobs in some operations, including "clean" could give them an extra value.

Describe the solution you'd like
Add an optional argument to "clean" for a job name. If this argument is provided, the function should only clean the jobs matching the name.

Describe alternatives you've considered
Getting jobs with the getter, filter them manually and delete the ones matching the name. This is of course pretty slow.

Additional context
Would be a useful function on UIs such as Taskforce.sh.