Followers
Follow Playlist
client.Playlists.Followers.Follow(ctx, playlistID, body) error
PUT/playlists/{playlist_id}/followers
Unfollow Playlist
client.Playlists.Followers.Unfollow(ctx, playlistID) error
DELETE/playlists/{playlist_id}/followers
Check if Current User Follows Playlist
client.Playlists.Followers.Check(ctx, playlistID, query) (*[]bool, error)
GET/playlists/{playlist_id}/followers/contains