Add animation to persistency=pause

[UndeadKitten]

I noticed with persistency=pause, unpausing doesn't have any animation, which becomes more noticeable if you increase your animation_duration=. Would be nice for that to have animation for unpausing to be consistent with flashes and mouse movement.

[tomasklaen]

This would require a lot of rewrites I don't have time for, so, maybe, someday.

[UndeadKitten]

That's understandable, it's a very minor issue that's only present for the user depending on their conf settings.

Incase this is referred to in the future, here is a video showing it for clarity:
https://github.com/user-attachments/assets/451bac83-35e5-4084-81c3-96f936955175

I also noticed that proximity-out doesn't have an animation either, unless you move your mouse outside of mpv's window, shown here:
https://github.com/user-attachments/assets/18326602-4620-4080-bdcc-02dec4d77fb1

[tomasklaen]

You must be using same proximity out & in, as they both have an animation.