feat(work): 企业微信接口增加 (#617)

* feat(work): 企业微信接口增加

群机器人 查询成员信息

* 变更

* fix(fix): 修复lint 报错

* fix: 删除注释多余字符

work/robot/robot.go

@@ -0,0 +1,29 @@
+package robot
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/silenceper/wechat/v2/util"
+)
+
+const (
+	// WebhookSendURL 机器人发送群组消息
+	WebhookSendURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=%s"
+)
+
+// RobotBroadcast 群机器人消息发送
+// @see https://developer.work.weixin.qq.com/document/path/91770
+func (r *Client) RobotBroadcast(webhookKey string, options interface{}) (info util.CommonError, err error) {
+	var data []byte
+	if data, err = util.PostJSON(fmt.Sprintf(WebhookSendURL, webhookKey), options); err != nil {
+		return
+	}
+	if err = json.Unmarshal(data, &info); err != nil {
+		return
+	}
+	if info.ErrCode != 0 {
+		return info, err
+	}
+	return info, nil
+}