Delete backtest by id and with filters

src/Managing.Api/Models/Requests/DeleteBacktestsRequest.cs

@@ -0,0 +1,16 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace Managing.Api.Models.Requests;
+
+/// <summary>
+/// Request model for deleting multiple backtests by their IDs
+/// </summary>
+public class DeleteBacktestsRequest
+{
+    /// <summary>
+    /// Array of backtest IDs to delete
+    /// </summary>
+    [Required]
+    [MinLength(1, ErrorMessage = "At least one backtest ID must be provided")]
+    public string[] BacktestIds { get; set; } = Array.Empty<string>();
+}