feat(wxads): 封装部分微信广告平台接口

src/SKIT.FlurlHttpClient.Wechat.Ads/Models/AdCreatives/AdCreativesAddResponse.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+
+namespace SKIT.FlurlHttpClient.Wechat.Ads.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /adcreatives/add 接口的响应。</para>
+    /// </summary>
+    public class AdCreativesAddResponse : WechatAdsResponse
+    {
+        public static class Types
+        {
+            public class Data
+            {
+                /// <summary>
+                /// 获取或设置广告创意 ID。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("adcreative_id")]
+                [System.Text.Json.Serialization.JsonPropertyName("adcreative_id")]
+                public long AdCreativeId { get; set; }
+            }
+        }
+
+        /// <summary>
+        /// 获取或设置返回数据。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("data")]
+        [System.Text.Json.Serialization.JsonPropertyName("data")]
+        public Types.Data Data { get; set; } = default!;
+    }
+}