添加袤博推送 (#284)

Co-authored-by: liuming <liuming@example.com>

internal/push/mobpush/common/getSign.go

@@ -0,0 +1,18 @@
+package common
+
+import (
+	"Open_IM/pkg/common/config"
+	"crypto/md5"
+	"encoding/hex"
+	"fmt"
+	"io"
+)
+
+func GetSign(paramsStr string) string {
+	h := md5.New()
+	io.WriteString(h, paramsStr)
+	io.WriteString(h, config.Config.Push.Mob.AppSecret)
+	fmt.Printf("%x", h.Sum(nil))
+
+	return hex.EncodeToString(h.Sum(nil))
+}