feat(storage): implement storage management API and enhance storage mode handling

Models/Request/Storage/UpdateStorageModeRequest.cs

@@ -0,0 +1,21 @@
+using System.ComponentModel.DataAnnotations;
+using Foxel.Services.Attributes; // For StorageType enum
+
+namespace Foxel.Models.Request.Storage;
+
+public class UpdateStorageModeRequest
+{
+    [Required]
+    public int Id { get; set; }
+
+    [Required]
+    [StringLength(100)]
+    public string Name { get; set; } = string.Empty;
+
+    [Required]
+    public StorageType StorageType { get; set; }
+
+    public string? ConfigurationJson { get; set; }
+
+    public bool IsEnabled { get; set; }
+}