add gitflow

.github/workflows/test.yml

@@ -0,0 +1,28 @@
+name: Test
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set up PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: '8.0'
+
+    - name: Install dependencies
+      run: composer install
+
+    - name: Run tests
+      run: vendor/bin/phpunit