Observability task: add spring configuration for QOS function

- [ ] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.

## Describe the proposal

Observability task: add spring configuration for QOS function

The dubbo.xsd file is not added with qos. Try to improve the dubbo.xsd file to add these configurations, which can be configured in the Spring configuration file

可观测性任务：为QOS功能增加spring配置

dubbo.xsd中未添加qos相关，尝试完善dubbo.xsd文件增加这些配置，在Spring配置文件中可以进行配置