[Feature Request] Streamline adding files to multiple episodes in a show

Not following issue template as this is a feature request, not a bug report. Hope this is okay.

Suggestion: Add something like a "Open Next Episode" checkbox to the "Manage Files" modal for an episode of a show like the "Close Modal on Select" checkbox. If this checkbox is ticked, when closing the modal via the close button or by picking a file for the episode, the same modal should be re-opened for the next episode in the show, allowing the user to quickly add files for an entire season.

As an extra, the ability to automatically search the last selected directory for the episode number could really speed bulk-adding episodes.

Hope this is alright as a suggestion, just coming from quite a lot of experience using Streama for a while now and would just consider this one of the biggest pain points of the app. Other than that, I've absolutely loved Streama so far and would love to start contributing!