Add Makefile for easy code style + unit test runs #23

	name: PHPUnit tests
	on:
	push:
	workflow_dispatch:
	pull_request:

	jobs:

	phpunit:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	php-versions:
	- '7.1'
	- '7.2'
	- '7.3'
	- '7.4'
	- '8.0'
	- '8.1'
	- '8.2'
	- '8.3'

	name: using PHP ${{ matrix.php-versions }}
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Install PHP ${{ matrix.php-versions }}
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php-versions }}
	tools: composer
	coverage: xdebug

	- name: Get composer cache directory
	id: composer-cache
	run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT

	- name: Cache dependencies
	uses: actions/cache@v4
	with:
	path: ${{ steps.composer-cache.outputs.dir }}
	key: ${{ runner.os }}-composer-${{ matrix.php-versions }}-${{ hashFiles('**/composer.lock') }}
	restore-keys: ${{ runner.os }}-composer-${{ matrix.php-versions }}-

	- name: Install dependencies
	run: composer install --no-interaction --prefer-dist

	- name: Run unit tests
	run: XDEBUG_MODE=coverage ./vendor/bin/phpunit --coverage-text

Provide feedback