WIP: track creation and deletion both in frontend and backend.

Source/Track.cs

@@ -0,0 +1,33 @@
+using System.Collections.Generic;
+using System.Linq;
+
+namespace AudioEditor;
+
+public class Track
+{
+    public int Idx { get; private set; }
+    public string Name { get; private set; }
+
+    public Track(int idx, string name)
+    {
+        Idx = idx;
+        Name = name;
+    }
+
+    public Track(int idx, string name, IEnumerable<Clip> clips)
+    {
+        Idx = idx;
+        Name = name;
+        _clips = clips.ToList();
+    }
+
+    public bool TryAddClip(Clip clip)
+    {
+        _clips.Add(clip);
+        return false;
+    }
+
+    public Track Duplicate() => new(Idx, Name, _clips);
+
+    private List<Clip> _clips = new();
+}