Restructured folders and project names, ci should be fixed

src/NadekoBot/Services/Database/Models/MusicPlaylist.cs

@@ -0,0 +1,12 @@
+using System.Collections.Generic;
+
+namespace NadekoBot.Core.Services.Database.Models
+{
+    public class MusicPlaylist : DbEntity
+    {
+        public string Name { get; set; }
+        public string Author { get; set; }
+        public ulong AuthorId { get; set; }
+        public List<PlaylistSong> Songs { get; set; } = new List<PlaylistSong>();
+    }
+}