Run as a flake8 plugin

[andreoliwa]

Hi there. Thanks for this tool, we will start to use it in my current company.

Is there any plan to turn this tool into a flake plugin? (Writing Plugins for Flake8 — flake8 3.9.2 documentation)

Pros:

1. Return violations in a known and standard format, already used by lots of developers.
2. Point to the exact line of the violation.
3. Allow integration with flake8 tools like https://github.com/flakehell/flakehell, which create a baseline of exclusions for legacy projects (baseline: integrate into a huge project — FlakeHell 0.8.0 documentation)

[seddonym]

Hi, thanks for the issue!

I'm open to adding support for it as a flake plugin if you (or someone else) would like to submit a pull request.