重构代码结构，迁移Baiyin SDK相关逻辑至globals包，并添加支付宝客户端初始化

web/globals/alipay.go

@@ -0,0 +1,32 @@
+package globals
+
+import (
+	"platform/pkg/env"
+
+	"github.com/smartwalle/alipay/v3"
+)
+
+var Alipay *alipay.Client
+
+func InitAlipay() {
+	var client, err = alipay.New(
+		env.AlipayAppId,
+		env.AlipayAppPrivateKey,
+		env.AlipayProduction,
+	)
+	if err != nil {
+		panic("初始化支付宝客户端失败: " + err.Error())
+	}
+
+	err = client.LoadAliPayPublicKey(env.AlipayPublicKey)
+	if err != nil {
+		panic("加载支付宝公钥失败: " + err.Error())
+	}
+
+	err = client.SetEncryptKey(env.AlipayEncryptKey)
+	if err != nil {
+		panic("设置支付宝加密密钥失败: " + err.Error())
+	}
+
+	Alipay = client
+}