GitHub Action for AnyLint

[Jeehut]

Problem Statement

It's not as easy as it could be to setup AnyLint at the moment for GitHub Actions. Also, the results don't show up in GitHub changes as comments directly. Could also just be integrated with https://github.com/marketplace/actions/lint-action.

Suggested Solution

There should be a ready GitHub action similar to this action for SwiftLint for quick usage.

[Jeehut]

With #39 and once AnyLint is added to Homebrew core, there's probably no need for this as installing is as simple as brew install anylint and running just anylint. The dropping of the swift-sh dependency helps a lot.