[Feature Request] Skip duplicate files.

[AccaGihu]

System Details:

• Operating System: Linux
• Distro(For GNU/Linux and BSD users): Manjaro
• Desktop Environment(For GNU/Linux and BSD users): KDE
• Persepolis Version: 3.2.0-6
• How do you install Persepolis? Pamac

I wanted to ask if it's possible to add the possibility to skip a download if a file with the same name is already present in the download folder.
Ideally it would be better to confront file size too but filename is already a good start.

Thanks is advance.