Animations for player elements

[nvllz]

Changes:

• Smooth transitions for song cover, title, and artist labels in the miniplayer
• Limited line height for title/artist labels in player to prevent horizontal UI movement (found with Chinese fonts, fixes vertical animation bug)
• Smooth transitions for title and artist labels in the player
• Elapsed time label animation on manual seek
• fixed rare crash caused by empty artist list

7e2564c5-608d-4a13-a092-32bacc82e5ca.mp4

@z-huang you might want to lower the slider refresh delay value as I was working on this pull request before your recent changes.

[z-huang]

• The text animation in player screen looks great!
• Why isn't the artist text in mini player animating?
• I don't think the elapsed time text animation necessary. Sometimes I need to drag to a specific time, but with this animation, I have to wait a little time for it to stop animating.

[nvllz]

Fixed both concerns, sorry for missing that.

[z-huang]

You shortened the elapsed time animation, but I still think it unnecessary. Animation doesn't need to be applied everywhere.

[nvllz]

Okay, if that's your only concern, feel free to drop that elapsed time label animation. But now I don't think it's really something that can make people "wait" because it's kind of like it was before when you drag it. Your choice, zhuang.

[z-huang]

Using a fixed height may not be good for all case. If the text is bigger, it's cut.

[nvllz]

If you don't apply the line height limit, the whole UI will move when larger text is displayed, and you'll get a vertical animation for those elements as before. If possible, setting it to the same value as current font size + 3.sp would work best from what I tested. If not, consider changing a font or idk.. Set a fixed font size and prevent it from scalling, as you probably don't care about these when using a bigger font size:

[z-huang]

As for the menu, I'm also thinking about changing the style to list. I found an animation that I prefer more: forward and backward https://m3.material.io/styles/motion/transitions/transition-patterns

[z-huang]

These animations can be done by #1017, so I'll close this pr. Thanks for your contribution!