[FEATURE REQUEST] Improve the Download Manager for deletion

[schnow265]

Preflight Checklist

• [X] I have read and I agree to follow the support disclaimer.
• [X] I am sure that my feature request has nothing to with third party extensions.
• [X] I am using the latest available Paperback version (currently 0.8).
• [X] I have searched the issue tracker for a feature request that matches the one I want to file, without success.

What type of Apple device is the feature request for?

All device types

Describe the feature

The only supported action for removal is „Remove all Unread chapters“.

Feature Motivation

If I would want to free up space by deleting a manga that I either downloaded and forgot about or didn‘t like, but already have fully downloaded, I have two options:

1. „read“ through all chapters and select „Remove read chapters“
2. Remove every chapter.

Either way is a long and tedious task.

Anything Else?

No response