4974: Bot for codespell

Misery

What version of Review Bot are you using?

3.0

Which tool(s) does this relate to?

codespell

Describe the enhancement and the motivation for it.

The tool codespell can check typos in source codes. It would be nice if there is a configurable bot for this.

Please provide any additional information below.

https://github.com/codespell-project/codespell