GSoC 2022: Proxyless Mesh

Please read the [detailed proposal of Dubbo Proxyless Mesh](https://github.com/apache/dubbo-awesome/blob/master/proposals/D3.2-proxyless-mesh.md) here first to know about the ultimate goal behind this issue.

We have started the development of Dubbo Proxyss Mesh for a while, so that means you don't have to start the project from the scratch, anyone who gets involved needs to start with a specific task at hand. As for the specific tasks to do in GSoC 2022, we are still working on it, we do have some tasks that can be distributed but we hope to discuss them with the contributors first.

So if you are interested in this project and the objective described in the proposal, please leave comments below so we can further exchange opinions.

Please don't forget to apply for GSoC from its official website when the application slot opens.

Read the linked D3.2-proxyless-mesh.md proposal first, then review the issue comments for any specific task agreed with maintainers. No concrete files, tests, implementation task, or completion criteria are provided, so the next step is to establish a scoped task before coding.

Written by the indexing model from the issue text.