Add an option to auto-paste link when opening "add app" tab

[ClockGen]

Describe the feature Some apps that deal with URLs (e.g. qbittorrent) automatically paste links from text buffer into relevant fields. It would be useful to add an option to automatically paste from text buffer into URL field when opening "add app" tab. Of course, not everyone wants that, so it could be added as a setting, disabled by default.