[Enhancement] Show best resolution album image

[mefsaal]

Is your feature request related to a problem? Please describe.
I'm always frustrated when apple-music-electron show a low resolution album image.

Describe the solution you'd like
if you change the mpris.js line
79: 'mpris:artUrl': (attributes.artwork.url.replace('/{w}x{h}bb', '/35x35bb')).replace('/2000x2000bb', '/35x35bb'),
to
79: 'mpris:artUrl': (attributes.artwork.url.replace('/{w}x{h}bb', '/512x512bb')).replace('/2000x2000bb', '/35x35bb'),

fixes

only small visual fix on kde and gnome visualizer.

[Jeve-Stobs]

I've added this enhancement in my PR (#284).

This issue will auto-close after it is merged to master.