Remove keycloak and add missing functions

Application/Tracks/Handler/CreateTrackCommandHandler.cs

@@ -42,7 +42,7 @@ namespace Musify.Application.Tracks.Handler
             await database.Tracks.AddAsync(trackEntity, cancellationToken);
             await database.SaveChangesAsync(cancellationToken);
 
-            return Result.Success();
+            return Result.Created(TrackResponse.FromEntity(trackEntity));
         }
 
         async Task<Result> UploadFilesAsync(

Application/Tracks/Handler/GetTracksByUserIdQueryHandler.cs

@@ -33,16 +33,7 @@ namespace Musify.Application.Tracks.Handler
                 .Select(t => TrackResponse.FromEntity(t.Track))
                 .ToPagedListAsync(pageNumber, pageSize, totalCount, cancellationToken);
 
-            var response = new PaginatedResponse<TrackResponse>(
-                pagedTracks.ToArray(),
-                pagedTracks.PageNumber,
-                pagedTracks.PageSize,
-                pagedTracks.PageCount,
-                pagedTracks.TotalItemCount,
-                pagedTracks.HasNextPage,
-                pagedTracks.HasPreviousPage);
-
-            return Result.Success(response);
+            return Result.Success(PaginatedResponse<TrackResponse>.FromPagedList(pagedTracks));
         }
     }
 }

Application/Tracks/Handler/GetTracksQueryHandler.cs

@@ -18,7 +18,6 @@ namespace Musify.Application.Tracks.Handler
             var pageSize = request.PageSize < 1 ? 10 : request.PageSize;
 
             var totalCount = await database.PlayLists.CountAsync(cancellationToken);
-
             var pagedPlayLists = await database.UserHasTracks
                 .AsNoTracking()
                 .OrderBy(t => t.Id)
@@ -26,16 +25,7 @@ namespace Musify.Application.Tracks.Handler
                 .Select(t => TrackResponse.FromEntity(t.Track))
                 .ToPagedListAsync(pageNumber, pageSize, totalCount, cancellationToken);
 
-            var response = new PaginatedResponse<TrackResponse>(
-                pagedPlayLists.ToArray(),
-                pagedPlayLists.PageNumber,
-                pagedPlayLists.PageSize,
-                pagedPlayLists.PageCount,
-                pagedPlayLists.TotalItemCount,
-                pagedPlayLists.HasNextPage,
-                pagedPlayLists.HasPreviousPage);
-
-            return Result.Success(response);
+            return Result.Success(PaginatedResponse<TrackResponse>.FromPagedList(pagedPlayLists));
         }
     }
 }