Add github actions, fix phpunit tests #1

	name: PHPUnit

	on: [push, pull_request]

	jobs:
	run:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	php-version: ['7.4', '8.0', '8.1', '8.2']
	name: PHPUnit w/ PHP ${{ matrix.php-version }}
	steps:
	- uses: actions/checkout@v4

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

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

	- name: Cache dependencies
	uses: actions/cache@v3
	with:
	path: ${{ steps.composer-cache.outputs.dir }}
	key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
	restore-keys: ${{ runner.os }}-composer-

	- name: Install dependencies
	run: composer install --prefer-dist

	- name: Run PHPUnit
	run: vendor/bin/phpunit --color=always

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