Add ConfigurationPreference::FilesystemOnly

[InSyncWithFoo]

Summary

Resolves #16209.

When configurationPreference is set to filesystemOnly, Ruff ignores all editor-level configurations. This is the same as editorOnly, but inverted.

Test Plan

None.

[InSyncWithFoo]

This seems surprisingly easy. I take it that the versioning problem mentioned in #16209 is to be handled within the extension?

[github-actions]

ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

✅ ecosystem check detected no linter changes.

[MichaReiser]

Could you please add a test plan (video?) demonstrating that this works as expected.

I'm also not sure if this is something we have a decision on or if it's just a feature request. @dhruvmanila ?

[dhruvmanila]

I'm also not sure if this is something we have a decision on or if it's just a feature request. @dhruvmanila ?

I think it makes sense to add it.

This seems surprisingly easy. I take it that the versioning problem mentioned in #16209 is to be handled within the extension?

It also requires updating the VS Code extension to allow the value in the editor settings. By versioning problem, I mainly meant that it might be good to check the Ruff version in the extension to see if this value is supported or not and handle it on the extension side otherwise the server will raise a deserialization error.

[MichaReiser]

I'll reply on the issue. Let's keep this in draft and re-publish once we're aligned on the behavior.