chore: setup gh format, lint and build checks workflow for back-end part #1

	name: "Nest Back-End format, lint and build checks"

	on:
	pull_request:
	branches:
	- '**'

	push:
	branches:
	- stable
	- unstable

	paths:
	- 'src/**'
	- 'test/**'

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	node-version: [18.x]
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Setup Node.js ${{ matrix.node-version }}
	uses: actions/setup-node@v4
	with:
	node-version: ${{ matrix.node-version }}

	- name: Install dependencies
	run: npm ci

	- name: Check format
	run: npm run format

	# commented till fixing lint errors
	# - name: Lint
	# run: npm run lint

	- name: Build
	run: npm run build

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