设备离线也添加，在线才推送2

app/Services/HikParkingCameraService.php

@@ -60,6 +60,7 @@ class HikParkingCameraService
         } else {
             foreach ($body as $key => $value) {
                 if ($value['ip']) {
+                    // 不在线不推送
                     if (!ParkingSpaceCamera::isOnlineCamera($value['ip'])) {
                         unset($body[$key]);
                     };