chore: write README file and setup CI/CD for npm auto-publish #3

	name: Publish to npm

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- develop

	jobs:
	publish:
	runs-on: ubuntu-latest

	steps:
	# 1. Checkout repository
	- name: Checkout repository
	uses: actions/checkout@v3

	# 2. Set up Node.js
	- name: Set up Node.js
	uses: actions/setup-node@v3
	with:
	node-version: '20'
	cache: 'yarn'

	# 3. Enable Corepack for Yarn
	- name: Enable Corepack for Yarn
	run: corepack enable

	# 4. Install dependencies (루트에서 워크스페이스 의존성 포함)
	- name: Install dependencies
	run: yarn workspaces focus --all --production

	# 5. `core` 디렉토리로 이동하여 빌드 및 배포 작업 수행
	- name: Build core package
	working-directory: ./core
	run: yarn build

	# 6. Publish core to npm
	- name: Publish core to npm (Dry Run)
	working-directory: ./core
	env:
	NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
	run: npm publish --dry-run

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