Redocly Lint Support

Hi i would like to create support for [redocly cli](https://redocly.com/docs/cli/commands/lint/) as a linter for openapi. I'm more than happy to take this work on if someone can point me in the correct direction or mentor me for this. I'm keen on adding this here as i'm already using spotless and don't want to create a one off gradle plugin and need to manage npm installs.