Implemented additional audio for mirror from Maggie; fixed shader flash

on damage from hitting glass shards.

scenes/main.gd

@@ -81,6 +81,7 @@ func _on_player_died():
     EventBus.goose_talk.emit(3)
     instance.queue_free()
     game_over.show()
+    $LevelAudio.stop()
     await get_tree().create_timer(2).timeout
     game_over.hide()
     $CanvasLayer/Title.show()
@@ -125,6 +126,9 @@ func new_game():
   # Tell the game we're playing.
     playing = true
     print("New game started!")
+    
+  # Play Level Music
+    $LevelAudio.play()
 
 
 func _input(EventInput):