Add `exclude` option to `format` and `lint` sections

[MichaReiser]

Add the new exclude option to the format and lint section to exclude a set of files for a specific tool only. Respect the new option in the check, fix, and format commands.

[MichaReiser]

@charliermarsh any advice on how to implement this? It seems that python_files_in_path is doing all the exclusions now. Should we just add an early check in one of the lint commands that returns immediately if the file is excluded?

[charliermarsh]

@MichaReiser - Yeah, that would be my suggestion: python_files_in_path applies the top-level filters, then we apply any further filters in lint. It's kind of similar to per-file-ignores: we filter down the global rule set based on the ignore setting, but we then apply any per-file-ignores after collecting diagnostics, on a per-file basis.

[MichaReiser]

We may also want to make sure that these files don't get formatted on save in the IDE. @charliermarsh does ruff lint files in the IDE that are not part of include or exclude?

[MichaReiser]

Adding exclude to lint will be somewhat challenging because we use serde's flatten to expose the same options top-level and under the lint keyword. This works perfectly but imposes a challenge now because exclude (and, in the future, the preview flag) conflicts with the top-level exclude setting.

I think what we can try is to have a few more structs 😆

• CommonLintOptions: The lint options without exclude (and eventually preview).
• LintOptions: Defines the preview option and flattens the CommonLintOptions
• Options flattens the CommonLintOptions (instead of LintOptions as of today)