1. add the lrc123.com parser engine
2. change the storage format of the lrc file. the default folder is "~/.lyricdis"
  , but you can change througe the lyrics-folder-change value in the org.gnome.rhythmbox.plugins.llyrics.gschema.xml
  file.
  now ,it is more fit to the chinese song.

Signed-off-by: anzizhao <anzizhao@126.com>