Add models

src/GameIdeas/GameIdeas.Shared/Model/Platform.cs

@@ -2,7 +2,15 @@
 
 public partial class Platform
 {
+    public Platform()
+    {
+        GamePlatforms = new HashSet<GamePlatform>();
+    }
+
     public int Id { get; set; }
     public string Libelle { get; set; } = null!;
     public string? Url { get; set; }
+
+    public virtual ICollection<GamePlatform> GamePlatforms { get; set; }
+
 }