Add a waveform seekbar

[Alphare]

I just saw this neat crate pop-up in the Rust subreddit and it made me think that it could be integrated into ytermusic without too much trouble.

The idea would be to use it to get data to feed into a tui widget to replace the current seekbar with a waveform of the currently playing song.

Basically like this plugin in Foobar2000: https://foobar.hyv.fi/?view=foo_wave_minibar_mod

[ccgauche]

I don't really know if this would be really useful nor easy to implement and I didn't see how the crate works