修改账号注册方法，以及邮箱协议对接

models/email.go

@@ -0,0 +1,17 @@
+package models
+
+type Email struct {
+	ID         int64  `gorm:"id;primary_key;auto_increment"`
+	Name       string `gorm:"name"`
+	Email      string `gorm:"email"`
+	Password   string `gorm:"password"`
+	UseStatus  string `gorm:"use_status"`
+	Platform   string `gorm:"platform"`
+	UpdateTime int64  `gorm:"update_time"`
+	CreateTime int64  `gorm:"create_time"`
+}
+
+// 实现 TableName 方法指定表名
+func (Email) TableName() string {
+	return "ar_email"
+}