feat!: migrate to ESM

[mdonnalley]

BREAKING CHANGES: ESM and node 18 minimum

What does this PR do?

• Migrate to ESM
  • removed all uses of __dirname and require()
  • updated various imports to be stubbable by sinon
  • bumped got to latest esm version
• Node 18 minimum
• Publish oclif.lock

What issues does this PR fix or reference?

[skip-validate-pr]

[iowillhoit]

Why is this hook removed?

[mdonnalley]

It's not needed because we can initialize the Doctor class at the beginning of the doctor command execution. Also hooks are fairly expensive in terms of performance, especially the init hooks since they'll run on every single command execution, even --help and --version

[iowillhoit]

QA NOTES

• 🟢 sf whatsnew works
• 🟢 I can pass versions and channels with --version
• 🟢 Created a prerelease of sf, running an npm install with --foreground-scripts shows notes
• 🟢 Release notes show after running sf update esm
• 🟢 Able to run sf doctor
• 🟢 Able to run plugin diagnostics sf doctor --plugin @salesforce/plugin-source
• 🟢 Able to run a command in diagnostic mode

A few unrelated issues (can be in another WI)

• The first time you run sf update (no /Users/ewillhoit/.local/share/sf/client dir), you get this warning that could probably be silenced:
  • Error: ENOENT: no such file or directory, open '/Users/ewillhoit/.local/share/sf/client/bin/sf'
• Start with sf update stable (or stable-rc), then update to sf update dev or esm and you'll see this error.
  • /Users/ewillhoit/.local/share/sf/client/bin/sf: line 17: update: command not found
  • For some reason, this only seems to happen when switching to a prerelease version
• Sometimes, for seemingly no reason, the release notes will not show