feat(invoice): 添加发票详情查询功能

- 新增 InvoiceInfo 类封装发票信息
- 新增 PointBalance 类封装积分余额信息
- 在 InvoiceRepoInterface 接口中添加 findOne 方法
- 在 InvoiceRepo 类中实现 findOne 方法，用于查询单张发票详情
- 添加单元测试验证 findOne 方法的功能

tests/Feature/Invoice/QueryInvoiceDetailTest.php

@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * QueryInvoiceDetailTest.php@Pay
+ *
+ * @author 李东云 <Dongyun.Li@LuxCreo.Ai>
+ * Powered by PhpStorm
+ * Created on 2025/9/5
+ */
+
+use Singularity\HDK\Pay\Domain\Invoice\Aggregate\Invoice\InvoiceInfo;
+use Singularity\HDK\Pay\Infrastructure\Repository\InvoiceRepo;
+
+use function Hyperf\Support\make;
+
+it('should can query invoice detail', function () {
+    $repo = make(InvoiceRepo::class);
+
+    $invoiceNo = '517268';
+    $result = $repo->findOne($invoiceNo);
+    expect($result)
+        ->toBeInstanceOf(InvoiceInfo::class);
+});