在上下文菜单中添加一个条目，将选定的歌曲名称和歌手复制到剪贴板
Adds an entry to the context menu (right mouse click) of the Spotify Web Player that let's you copy the selected song name and artist to the clipboard.
You can copy the info of multiple songs at the same time, if you select them with CTRL or SHIFT key.
