增加添加和绑定sn，增加阿里云推送

src/main/java/com/onekeycall/videotablet/service/DeviceSnService.java

@@ -17,4 +17,8 @@ public class DeviceSnService {
     public DeviceInfo findBySn(String sn) {
         return deviceSnRepository.findBySn(sn);
     }
+
+    public void save(DeviceInfo deviceInfo) {
+        deviceSnRepository.save(deviceInfo);
+    }
 }