Add a way to map playlist index with shuffled index and vice-versa in Remote.

[iZakirSheikh]

Audiofy have a feature that allows the user to shuffle their playlist and play the audio files in a random order. However, it currently doesnt have a way to map the playlist index with the shuffled index and vice-versa in Remote. This is a problem because methods like addToPlayingQueue like mthods need this to enhance add item at specied fun in that mode.