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.

Models/ExecutionPlanNode.cs

@@ -0,0 +1,18 @@
+// Code generated by apigen. DO NOT EDIT.
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace RudderSdk.Core.Models;
+
+public class ExecutionPlanNode
+{
+    [JsonProperty("data")]
+    public JToken? Data { get; set; }
+
+    [JsonProperty("id")]
+    public string? Id { get; set; }
+
+    [JsonProperty("type")]
+    public string? Type { get; set; }
+
+}