build: Yarn v3 migration

[jpandersen87]

Summary

This PR migrates the project from yarn v1 to v3 with classic-mode node_modules support (dependabot support for v4 is incomplete currently).

• .gitignore yarn entries updated
• yarn.lock migrated
• yarn config updated
  • interactive-tools and typescript plugins added
  • nodeLinker option explicitly set to node-modules (yarn classic-compatibility)
• obsolete manual package resolutions removed
• husky install moved from prepare to postinstall lifecycle script
• prepublishOnly lifecycle script moved to prepack
• yarn build moved from prepare to prepack lifecycle script
• happo-ci script updated to call happo-ci-github-actions via npx (yarn v2+ breaks otherwise)
• dangerfile script updated to support yarn npm audit

How To Test

• Github workflows complete successfully