Background Audio

[gautam17pranjal]

• can the music be stopped when the game is finished.
• the volume for enemy shooting, mystery box collection, the player getting hit is tooooo much. see if that can be reduces a bit. rest all looks good.

[biyaniM]

@gautam17pranjal these changes can be linked directly to when @sulysu adds the volume slider in the Settings Menu. All the audios already have a volume float attribute. Also, in #267 the code for pausing all audio is already placed.