feat(账户): 添加邮箱管理功能并重构账户仓库

- 创建 Email 值对象用于封装邮箱信息
- 扩展 AccountRepoInterface 添加邮箱管理方法
- 重命名 AccountBalanceRepo 为 AccountRepo 并实现邮箱功能
- 更新相关测试用例和配置以适配新功能

tests/Feature/Account/QueryPointBalanceTest.php

@@ -10,13 +10,13 @@
 
 use Singularity\HDK\Pay\Domain\Account\Aggregate\Account\PointsBalance;
 use Singularity\HDK\Pay\Domain\Account\Enum\PointType;
-use Singularity\HDK\Pay\Infrastructure\Repository\AccountBalanceRepo;
+use Singularity\HDK\Pay\Infrastructure\Repository\AccountRepo;
 
 use function Hyperf\Support\make;
 
 it('should query point balance', function () {
     $uid = 'cn3221';
-    $repo = make(AccountBalanceRepo::class);
+    $repo = make(AccountRepo::class);
     $point_balance = $repo->getPointBalance($uid, PointType::EMA);
     expect($point_balance)
         ->toBeInstanceOf(PointsBalance::class)