Delete downloaded chapter when removing book from library

[BloodlineHeart]

Describe your suggested feature

When removing a book from library, let all the downloaded chapters of the book be deleted. The downloaded chapters of books I have removed from my library leaves files on the storage taking up space.

Other details

No response

Acknowledgements

• [x] I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open or closed issue.
• [X] I have written a short but informative title.
• [X] If this is an issue with a source, I should be opening an issue in the sources repository.
• [X] I have updated the app to version 1.1.12.
• [X] I will fill out all of the requested information in this form.

[rajarsheechatterjee]

There's already a snackbar which pops up when you remove a novel with downloaded chapters from library.