add option "do not add playing episodes to the queue"

[asdoi]

Some users, including me, just want to listen to a podcast and do not want that it gets automatically added to the queue.
Futhermore I only want to see episodes showing up in the queue if I manually add them.

This adds the matching "auto enqueue playing" media setting.
Closes #3246

[ByteHamster]

This change sounds like it could be a bit risky. What episodes does AntennaPod play next when enabling the "Follow queue" setting? How do external media players display the queue (we send it to them using a MediaSession). What happens when you skip an episode? One should probably have a close look at PlaybackService.getNextInQueue() method to make sure that this does not break something.

[asdoi]

The behaviour should be same like playing an episode and then manually removing it from the queue.
Furthermore I played episodes with follow queue enabled and if the episode is over the playback stops, like it does normally if the item is not in the queue. And in my tests I do not get any error or anything else.

[Pentaphon]

I totally agree with this. I don't want to use the queue at all unless I want to make a queue for some special reason like I need 3 podcasts to play in order because I don't want to use my hands to switch to the next podcast when I'm busy for a couple of hours. Also, I usually want to listen to 1 podcast at a time and I don't want it to continue to another podcast I have downloaded for later.

[ByteHamster]

Now that I think of it, it could actually also be valid to never add playing episodes to the queue automatically and follow whatever list you look at when pressing the play button. I am still a bit undecided in what direction the queue feature should go in the future.

[Pentaphon]

and follow whatever list you look at when pressing the play button.

Yep, think of it as manual versus automatic mode. It also avoids accidentally falling asleep to a single podcast only to find out you played your whole queue you didn't realize you made overnight and have to download the episodes again. That's happened to me once.

[keunes]

I usually want to listen to 1 podcast at a time and I don't want it to continue to another podcast I have downloaded for later

and

could actually also be valid to never add playing episodes to the queue automatically and follow whatever list you look at when pressing the play button

That's indeed requested through #1533.

think of it as manual versus automatic mode. It also avoids accidentally falling asleep to a single podcast only to find out you played [overnight] your whole queue you didn't realize you made

There are already measures you can take: disable continuous playback and/or automatic download.