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.

Inventory/PlayerInventoryItem.cs

@@ -1,25 +1,25 @@
 // Code generated by apigen. DO NOT EDIT.
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
-using System.Collections.Generic;
+using System;
 
 namespace RudderSdk.Core.Models.Inventory;
 
 public class PlayerInventoryItem
 {
     [JsonProperty("amount")]
-    public long Amount { get; set; }
+    public long? Amount { get; set; }
 
     [JsonProperty("nameOverride")]
-    public string NameOverride { get; set; }
+    public string? NameOverride { get; set; }
 
     [JsonProperty("propertiesOverride")]
-    public JToken PropertiesOverride { get; set; }
+    public JToken? PropertiesOverride { get; set; }
 
     [JsonProperty("slug")]
-    public string Slug { get; set; }
+    public string? Slug { get; set; }
 
     [JsonProperty("updatedAt")]
-    public string UpdatedAt { get; set; }
+    public DateTimeOffset? UpdatedAt { get; set; }
 
 }