[FEATURE] -Radarr/Sonarr - Extras subfolder

[quadcom]

Is your feature request related to a problem? Please describe.
No problem, quality of life improvement

Describe the solution you'd like
Currently a Kodi user. The "Extras" addon for Kodi will present a window showing the contents of a folder in the target DIR named "extras." It would be awesome if we could set the extras script to store all the content in a custom folder in the target DIR.

Describe alternatives you've considered
There are no alternatives. We are forced to navigate back to the Kodi media sources list and find the folder containing the film/show to see the extras content. If the library is significant, finding the target can take multiple minutes, simply to watch a trailer.

Additional context
here's a visual example

[RandomNinjaAtk]

I will welcome a PR for a setting and changes that can do what your requesting. It must maintain existing functionality.