Fix 9 design majors: ITrackService interface, IsDescending, ArrayPool base, CliUtils, sort sentinel cleanup, content controller via TrackService, Skip property

DeepDrftWeb.Services/ITrackService.cs

@@ -0,0 +1,15 @@
+using DeepDrftModels.Entities;
+using DeepDrftModels.Models;
+using NetBlocks.Models;
+
+namespace DeepDrftWeb.Services;
+
+public interface ITrackService
+{
+    Task<ResultContainer<TrackEntity?>> GetById(long id);
+    Task<ResultContainer<List<TrackEntity>>> GetAll();
+    Task<ResultContainer<PagedResult<TrackEntity>>> GetPaged(int pageNumber, int pageSize, string? sortColumn, bool sortDescending);
+    Task<ResultContainer<TrackEntity>> Create(TrackEntity newTrack);
+    Task<ResultContainer<TrackEntity>> Update(TrackEntity track);
+    Task<Result> Delete(long id);
+}