chore: set up 3rd-party license generation

[jcfranco]

Related Issue: #11546

Summary

This adds a utility script that generates 3rd-party license information for each package.

Notes

• file name is THIRD-PARTY-LICENSES.md (TPL)
• TPL is referenced in each package's README
• all packages are set up to generate a TPL (except the internal @esri/eslint-config-calcite package)
  • if there are no 3rd-party dependencies, it will display an appropriate message
• relies on https://www.npmjs.com/package/generate-license-file
• packages will now include TPL when published
• util script (util:update-3rd-party-licenses) can be called from the monorepo root or from individual packages
  • to ensure generate-license-file generates licenses correctly, this script installs node_modules and package-lock.json locally in each package (removed when finished)
  • I’ve created Add support for monorepos with root-level dependencies TobyAndToby/generate-license-file#597 to add support for root-level monorepo setups, which would eliminate the need for the above step.