Add annotation support for recently introduced configuration items like 'metrics'

[chickenlj]

https://github.com/apache/dubbo-samples/pull/711#discussion_r1090707042

[songxiaosheng]

Hello sir , I am new to open source contribution. I already know java , my tech stacks & tools includes C, C++ , Python , Java, JavaScript , HTML , CSS , SQL , Bootstrap, ReactJS, ExpressJS, NodeJS & Git . I need a little help from your side to contribute to these amazing projects.

cloud you give me your email

[WindSearcher]

can i try it？ email：[email protected]

[ghost]

@songxiaosheng [email protected]