Request help: develop a tool to migrate from gRPC to Kitex

[ppzqh]

Is your feature request related to a problem? Please describe.
Provide a migration tool that can help gRPC user migrate to Kitex in an easy way.

Describe the solution you'd like

This tool can automatically replace the usage of gRPC with Kitex, including the running server, client and options provided by kitex. It also helps to generate code using Kitex cmd tool that is transforming protoc cmd to kitex cmd (optional).

Additional context
Using Kitex with gPRC protocol:

• https://www.cloudwego.io/docs/kitex/tutorials/basic-feature/protocol/serialization-protocol/protobuf/

Code generation using kitex:

• https://www.cloudwego.io/docs/kitex/tutorials/code-gen/code_generation/#notes-for-using-protobuf-idls
• https://github.com/cloudwego/kitex-examples/tree/main/kitex/protobuf

[Zzhiter]

More user story on this? When migrating from an existing gRPC project to kitex, there may be a lot of tests that need to be changed besides server and client.

[ppzqh]

First version of the migration tool has been developed, will release after more trial and testing.