[Feature]: Keep items (shows) that are continuing.

[JamsRepos]

Describe the feature you'd like added

For example; The Boys isn't currently airing but a new season is due soon. Unless I set the days to something high say a year, this show will be deleted. So when the new show airs. it won't be put onto the server.

In an ideal world, there should be a checkbox to state whether to include continuing shows so you can have your days set to 90 for example (so everything gets deleted after 3 months if it's old content) but because it's got new episodes next year, it will remain.

Additional context

For items that haven't been played at all, this should not be exempt from. As, why would we want to keep content that hasn't been played at all. This should only be included for "latest playback".