feat(oxlint): add cwd property to LintRunner

[Sysix]

allows to use multiple LintRunner in one file targeting multiple directory.
The current problem is for the test in #7348 we can not change env::current_dir,
so as a workaround I introduce a new property :)

See more info here: https://discord.com/channels/1079625926024900739/1117322804291964931/1308179827576016897

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[Boshen]

This is not a eslint CLI option, https://eslint.org/docs/latest/use/command-line-interface

allows to use multiple LintRunner in multiple directory with only using one command / file.

Where and how is this going to be used? Should this be made internal without a CLI?

[Sysix]

Should this be made internal without a CLI?

Maybe yes!

Where and how is this going to be used?

npx oxlint --working-dir packages/oxlint
npx oxlint --working-dir packages/vscode

instead of:

cd packages/oxlint && npx oxlint
cd ../..
cd packages/vscode && npx oxlint

and you can use two LintRunner instances with different working-dirs in one file/command.
This last feature is needed for the referenced PR :)

This is not a eslint CLI option,

I know :/ Maybe there is a better solution for my problem?

[Sysix]

Updated the PR.

The remap of the paths is needed because else the path would be filtered out in line 100 (Walk::...).
Maybe this can get even cleaner :)