feat: B1 Google Play Billing 票据校验

- 新增 GooglePlayVerifier（调 Google Play Developer API 二次校验票据）
- StoreVerifier.verify 扩展 productId 参数，订单/控制器链路同步
- DisabledStoreVerifier 加条件装配，Google 启用后自动切换
- application.yml 增加 pay.google 配置（凭证经环境变量注入，默认关闭）

fruitshorts-module-commerce/pom.xml

@@ -34,5 +34,16 @@
             <groupId>com.fruitshorts</groupId>
             <artifactId>fruitshorts-module-playback</artifactId>
         </dependency>
+        <!-- Google Play Billing 票据校验 -->
+        <dependency>
+            <groupId>com.google.apis</groupId>
+            <artifactId>google-api-services-androidpublisher</artifactId>
+            <version>v3-rev20231030-2.0.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.auth</groupId>
+            <artifactId>google-auth-library-oauth2-http</artifactId>
+            <version>1.23.0</version>
+        </dependency>
     </dependencies>
 </project>