feat: 增加sendcloud邮件服务器的支持 (#947)

* 增加sendcloud邮件服务器的支持

* 调整代码结构

* Used slince.Contains function

---------

Co-authored-by: shih <shih@knownsec.com>

common/utils.go

@@ -7,7 +7,6 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
-	"github.com/pkg/errors"
 	"html/template"
 	"io"
 	"log"
@@ -22,6 +21,7 @@ import (
 	"time"
 
 	"github.com/google/uuid"
+	"github.com/pkg/errors"
 )
 
 func OpenBrowser(url string) {