Unmonitor or blacklist failed imports

[Bittins]

First off, I want to say thank you so much for this script!
Unfortunately, since I installed I have had some issues with Lidarr occasionally failing to import the downloaded files from slskd. When this happens, the download gets removed from the slskd downloaded queue, but the item still remains monitored in Lidarr. When Soularr runs again it sees the monitored item and attempts to download it, only to fail to import, and the cycle repeats. I had luckily caught this happening early on while I was configuring it, but today I woke up to see that the entire rest of my SSD space had been taken up by 67 GB of the same Death Grips album.
I have a couple of ideas on how to implement a fix for this:

1. Scan slskd's download queue for the item to be searched and downloaded, and skip it if it's found. This would also require that Soularr does not remove the item from the queue on a failed import.
2. Keep a blacklist of failed imported items.
3. On a failed import, set the item to be unmonitored in Lidarr.
   Thanks for all your work, it definitely doesn't go unappreciated :D

[good-luck-dev]

Also want to say that I really appreciate the work you've done on this script, slsk is easily the best source for high quality music.
I think this should be solved using tags, and just don't search for any option that has been tagged as 'failed to import'. This way, it allows other scripts to try and search for the missed imports.

[mrusse]

Tagging is definitely a better idea than adding it to the failed import file. Will look into it.