feat: implement create-slack-message #21

	name: Continuous Integration

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

	permissions:
	contents: read

	jobs:
	test-typescript:
	name: TypeScript Tests
	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	id: checkout
	uses: actions/checkout@v4

	- name: Setup Node.js
	id: setup-node
	uses: actions/setup-node@v4
	with:
	node-version-file: .node-version
	cache: npm

	- name: Install Dependencies
	id: npm-ci
	run: npm ci

	- name: Check Format
	id: npm-format-check
	run: npm run format:check

	- name: Lint
	id: npm-lint
	run: npm run lint

	- name: Test
	id: npm-ci-test
	run: npm run ci-test

	create-slack-message:
	name: GitHub Actions Test
	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	id: checkout
	uses: actions/checkout@v4

	- name: Create message for Slack posts
	id: create-message
	uses: ./

	- name: Print Output
	id: output
	run: echo "${{ steps.create-message.outputs.message }}"

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