Add ability to pause/resume entire BitTorrent session

[glassez]

• Replaces current unsafe Start all and Stop all actions with Pause session and Resume session (paused session preserves started/stopped states of torrents when resumed).
• Adds an option to start session in paused state.

Closes #18993.

[thalieht]

One minor issue which i'm not even sure that it's a bug: Disabling the queue doesn't update the state of queued torrents while session is paused.

[glassez]

Disabling the queue doesn't update the state of queued torrents while session is paused.

I suppose you mean changing "queued" to "seeding" or "downloading".
I tried to fix it, but I don't know if I succeeded, since I haven't had the opportunity to test it yet.
Should be fixed now.

[Roardom]

Am I understanding correctly that, when a user pauses their session, that private trackers will receive no announces saying that their client has stopped their torrents?

This would prevent me from being able to delete their IP from the database, or being able to configure a suitable time out for how long I should keep their data after expecting users to announce again. I also can't keep reasonable statistics.

Or am I misunderstanding?

[glassez]

Or am I misunderstanding?

Yes.
It works as if you stopped all your torrents. The only difference is that it preserves individual torrent states, so when you resume the session, previously stopped torrents will remain stopped.

[Roardom]

Or am I misunderstanding?

Yes. It works as if you stopped all your torrents. The only difference is that it preserves individual torrent states, so when you resume the session, previously stopped torrents will remain stopped.

Perfect, thank you.