Linter CLI: Implement a Linter Worker to parallelize file processing

[marcoroth]

This pull request implements a linter worker to speed up the file processing of the linter CLI.

On a quick initial test, it seems to be quite significant using the default (auto) option:

App 1

Before

 Summary:
  Checked      421 files
  Files        24 with offenses | 397 clean (421 total)
  Offenses     23 errors | 33 warnings | 1 info (57 offenses across 24 files)
  Fixable      57 offenses | 25 autocorrectable using `--fix`
  Start at     01:58:43
  Duration     2958ms (71 rules)

After

 Summary:
  Checked      421 files
  Files        24 with offenses | 397 clean (421 total)
  Offenses     23 errors | 33 warnings | 1 info (57 offenses across 24 files)
  Fixable      57 offenses | 25 autocorrectable using `--fix`
  Start at     01:57:40
  Duration     1264ms (71 rules)

App 2

Before

 Summary:
  Checked      1384 files
  Files        564 with offenses | 820 clean (1384 total)
  Offenses     1998 errors | 282 warnings (2280 offenses across 564 files)
  Fixable      2280 offenses | 591 autocorrectable using `--fix`
  Start at     01:59:52
  Duration     7292ms (70 rules)

After

 Summary:
  Checked      1384 files
  Files        564 with offenses | 820 clean (1384 total)
  Offenses     1998 errors | 282 warnings (2280 offenses across 564 files)
  Fixable      2280 offenses | 591 autocorrectable using `--fix`
  Start at     01:59:20
  Duration     2427ms (70 rules)

[pkg-pr-new]

npx https://pkg.pr.new/@herb-tools/formatter@1371

npx https://pkg.pr.new/@herb-tools/language-server@1371

npx https://pkg.pr.new/@herb-tools/linter@1371

commit: e42d60f

[github-actions]

🌿 Interactive Playground and Documentation Preview

A preview deployment has been built for this pull request. Try out the changes live in the interactive playground:

• Playground Preview
• Documentation Preview
• Website Preview

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_{🌱 Grown from commit e42d60f}

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✅ Preview deployment has been cleaned up.