création CreateShowEndpoint.cs et rectification quelque chemin

PF3/Models/SoundCategory.cs

@@ -0,0 +1,11 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace PF3.Models;
+
+public class SoundCategory
+{
+    [Key] public int Id { get; set; }
+    [Required, MaxLength(100)] public string Name { get; set; } = null!;
+    
+    public List<Sound>? Sounds { get; set; }
+}