test(linter): add linter to coverage task

[DonIsaac]

Makes cargo coverage run the linter. It can be run in isolation with cargo coverage linter.

The linter is run with fixes and all rules enabled (except nursery rules) in an identical fashion to oxlint -W all --fix. The fixed code is then re-parsed and checked for errors. Tests will fail if parsing fails or if semantic analysis produces more errors the second time around than when the original source code is analyzed.

I've already found several problems with fixes, including 2 panics. One of them was fixed in #3590, and the other is fixed in this PR.

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[codspeed-hq]

CodSpeed Performance Report

Merging #3591 will not alter performance

_{Comparing don/linter/test/conformance (8cd8450) with main (f0b689d)}

Summary

✅ 22 untouched benchmarks

[Boshen]

Should we add this to https://github.com/oxc-project/oxlint-ecosystem-ci/actions/workflows/ecosystem-ci.yml instead 🤔 It's quite difficult to interpret the snapshot results.

This also makes the conformance suite even slower to compile :-(

[DonIsaac]

It appears to add 50s to the conformance CI job. If we think this is too high I can move it to the ecosystem CI job, though it may not catch some of the weirder fixes (e.g. labels)

[Boshen]

It appears to add 50s to the conformance CI job. If we think this is too high I can move it to the ecosystem CI job, though it may not catch some of the weirder fixes (e.g. labels)

Let's try and move this to ecosystem CI with fixes applied to running oxlint, and then check whether the fixed file is good, maybe by running oxlint over it again?

[Boshen]

Moving to oxc-project/oxlint-ecosystem-ci#11