Automatically publish

[mechiru]

I'm planning to do an automated test triggered by an update of the renovate bot's git submodule, merge it if it works, and publish it to crates.io.
I did it manually for the first few months, but when I'm busy it gets harder to update. So I think we need to prioritize this task.

The following needs to be resolved :

• generate code
  • Even if the code generation is successful, the build may fail.
• automatically update features
  • Only those that build successfully will be accepted as features. I'm doing it manually now, but it's very painful.
• versioning rule
  • Currently, when I generate the code, I am raising the patch version. However, due to the update of the proto file, it may not follow the rules of the semantic version.