chore: add workflow that tests if tarball is installable #4

	name: NPM pack check
	on:
	pull_request:
	branches:
	- master
	jobs:
	npm-pack-check:
	runs-on: ubuntu-latest
	# Only run this job if the PR is from a trusted collaborator (i.e. not a fork)
	if: github.event.pull_request.head.repo.full_name == github.repository
	steps:
	# Checkout project repository
	- name: Checkout
	uses: actions/checkout@v3.5.0

	# Setup Node.js environment
	- name: Setup Node.js
	uses: actions/setup-node@v3
	with:
	registry-url: https://registry.npmjs.org/
	node-version: 20

	# Install dependencies so that prepublish scripts work as expected
	- name: Install deps
	run: npm i

	- name: Create test install directory
	run: mkdir ../test-install

	- name: Ensure pack file can be installed
	run: \|
	export PACK_FILENAME=$(npm pack --json \| jq -r '.[] \| .filename')
	mv $PACK_FILENAME ../test-install/
	cd ../test-install
	npm install $PACK_FILENAME
	node -e "const yates = require('@cerebruminc/yates'); if (typeof yates.setup === 'undefined') { throw new Error('setup export is undefined'); }"

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