[TEST] Proof of concept: Yarn 3 Upgrade

[hydrosquall]

WIP

• This doesn't adhere to commit or feature branch dev style yet - just wanted to make this branch available as a reference for testing.

Motivation

• Bringing the benefits of Yarn's most recent developer experience updates (v2, v3) to Dendron

Changes

• Followed the migration guide
• Migrated two NPM scripts since one of the pre-commit hooks was failing to execute.

Commit

• make sure your branch names adhere to our branch style
• make sure the commit message follows Dendron's commit style
• if this pull request is addressing an existing issue, make sure to link this PR to the issue that it is resolving.
  • NOTE: make sure to read Addressing open issues

Code

• code should follow Code Conventions
• sticking to existing conventions instead of creating new ones

Tests

• Write Tests
• Confirm existing tests pass
• Confirm manual testing
• Common cases tested
• 1-2 Edge cases tested
• If your tests changes an existing snapshot
  • Update the Snapshot

Docs

• if your change reflects documentation changes, also submit a PR to dendron-site and mention the doc PR link in your current PR (NOTE: submit the PR against the dev branch of the dendron-site repo)

• does this change introduce a new or better way of doing things that others need to be aware of? if so, an async should be created and a process added in Development or Packages

[CLAassistant]

All committers have signed the CLA.

[hydrosquall]

This was failing before, I think it's because Yarn uses its own shell parser to run these scripts, and wasn't handling the {} characters properly. Hoisted these scripts out to their own files to workaround it.

yarnpkg/berry#2670