'Delete and Blacklist' option in Queue

[HStep20]

Oftentimes my queue fills up with videos from a channel that streams 12+ hours a day, multiple times a week. Usually, this is fine, since it means Ganymede is doing it's job, but occasionally I go a bit without using them as background noise and want to clear the queue to free up some storage.

Unfortunately, when an item is deleted from the queue while it is still processing, Ganymede doesn't seem to recognize that it was purposefully removed from the queue, and just adds it back to the queue the next time the task is run.

I would be great if there were a second option when selecting items in a queue that would let you 'Delete and Blacklist queue items' which would prevent it from redownloading those same streams on the task refresh.

[Zibbp]

This will be available in v3. See #474 for instructions to beta test if you want to.