Add:
- Licenses page in About
- Spaces between albums, artists, and playlists

Changed:
- Rework on shimmering effect
- Player will now use Proxy to get data
- Apply default image when playlist's thumbnail is unavailable

Fixed:
- Image fetcher failed to start with app
- Duplicate "image cache size" in Data Settings
- Notification, download state, and DiscordRPC refused to update
- Clicking on albums, artists, and playlists didn't go to said page
- Local playlist failed to create when YT sync is enabled
- Local playlist's content erased when YT sync is enabled
