0.4.0: Claim, Models/ DTOs, compile

LeaderboardSession.ClaimAsync sends onClaim. Generated DTOs live under Models/ with nullable wire fields. Remove incomplete duplicate type files.

Stores/ListStoresResponse.cs

@@ -1,6 +1,5 @@
 // Code generated by apigen. DO NOT EDIT.
 using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
 using System.Collections.Generic;
 
 namespace RudderSdk.Core.Models.Stores;
@@ -8,9 +7,9 @@ namespace RudderSdk.Core.Models.Stores;
 public class ListStoresResponse
 {
     [JsonProperty("stores")]
-    public List<Store> Stores { get; set; }
+    public List<Store>? Stores { get; set; }
 
     [JsonProperty("total")]
-    public int Total { get; set; }
+    public int? Total { get; set; }
 
 }