add github workflow

Author: dietercoopman

.github/workflows/php-cs-fixer.yml

@@ -0,0 +1,29 @@
+name: Check & fix styling
+
+on: [push]
+
+jobs:
+  style:
+    runs-on: ubuntu-latest
+
+    steps:
+      -   name: Checkout code
+          uses: actions/checkout@v1
+
+      -   name: Fix style
+          uses: docker://oskarstark/php-cs-fixer-ga
+          with:
+            args: --config=.php_cs.dist.php --allow-risky=yes
+
+      -   name: Extract branch name
+          shell: bash
+          run: echo "##[set-output name=branch;]$(echo ${GITHUB_REF#refs/heads/})"
+          id: extract_branch
+
+      -   name: Commit changes
+          uses: stefanzweifel/git-auto-commit-action@v2.3.0
+          with:
+            commit_message: Fix styling
+            branch: ${{ steps.extract_branch.outputs.branch }}
+          env:
+            GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/php-tests.yml

@@ -0,0 +1,12 @@
+name: tests
+
+on: [push]
+
+jobs:
+  build-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: php-actions/composer@v5 # or alternative dependency management
+      - uses: php-actions/phpunit@v2

.gitignore

@@ -0,0 +1,6 @@
+.idea
+build
+composer.lock
+vendor
+.phpunit.result.cache
+.php-cs-fixer.cache