Resolve WES-89 "Justsign music"

Assets/JustSign/Scripts/SongList.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+/// <summary>
+/// Keep track of all songs
+/// </summary>
+[CreateAssetMenu(menuName = "Create new Scriptable/SongList")]
+public class SongList : ScriptableObject
+{
+    /// <summary>
+    /// Index of the active/to be loaded/current song
+    /// </summary>
+    public int currentSongIndex = 0;
+
+    /// <summary>
+    /// List of all installed songs
+    /// </summary>
+    public List<Song> songs = new List<Song>();
+}