Prior art: https://github.com/r7kamura/danger-suggester

Basically, this feature allows a command to be run that attempts to "fix" issues (e.g., npx eslint --fix src/), and it uses the resulting git diff to generate comments that have the special suggestion syntax:

```suggestion
the new line of code to suggest
```

Theoretically, would it be easy to add something like this to reviewdog?

Thanks for considering!