Many rules report errors which could be fixed automatically. When a rule reports and error/warning it should optionally provide a list of: - fixes: definitive solutions to the issue - suggestions: possible solutions to the issue - each entry should include a callback to run including the `Source` object, helper functions. The difference between the two is that a suggestion might not always work or provide a more opinionated solution. The CLI should support a `--fix` option which would apply the first fix (not suggestion). Tooling such as the vscode extension should show the full list and leave it to the user which one to apply.