- added github workflow

.github/workflows/ci.yml

@@ -0,0 +1,56 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+env:
+  timezone: UTC
+  REQUIRED_PHP_EXTENSIONS: 'zip'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        php-version:
+          - '8.1'
+          - '8.2'
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Setup PHP ${{ matrix.php-version }} (${{ matrix.os }})
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php-version }}
+        tools: composer:v2
+        coverage: pcov
+
+    - name: Validate composer.json
+      run: composer validate --no-check-lock
+
+    - name: Get Composer cache directory
+      id: composer-cache
+      run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+    - name: Cache Composer packages
+      uses: actions/cache@v2
+      with:
+        path: ${{ steps.composer-cache.outputs.dir }}
+        key: composer-${{ runner.os }}-${{ matrix.php-version }}-${{ hashFiles('**/composer.json') }}
+        restore-keys: |
+          composer-${{ runner.os }}-${{ matrix.php-version }}-${{ hashFiles('**/composer.json') }}
+          composer-${{ runner.os }}-${{ matrix.php-version }}-
+          composer-${{ runner.os }}-
+          composer-
+
+    - name: Install dependencies
+      run: composer update -o --prefer-dist --no-progress --no-interaction
+
+    - name: Run test suite
+      run: vendor/bin/phpunit --verbose --coverage-text