Fix ECS, incl. new GitHub Actions

.gitattributes

@@ -0,0 +1,10 @@
+/.github export-ignore
+/tests export-ignore
+/.gitattributes export-ignore
+/.gitignore export-ignore
+/.php_cs export-ignore
+/.scrutinizer.yml export-ignore
+/.travis.yml export-ignore
+/phpunit.xml.dist export-ignore
+/rector.php export-ignore
+/ecs.php export-ignore

.github/workflows/code_style_check.yaml

@@ -0,0 +1,30 @@
+name: Code Style Check
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  code_style:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: shivammathur/setup-php@v1
+        with:
+          php-version: 7.3
+          coverage: none # disable xdebug, pcov
+      - run: composer install --no-progress
+      # fix code style, automatically
+      - run: composer fix-cs
+      # push changes back
+      # note that this might not work with PRs from forks:
+      # https://github.com/stefanzweifel/git-auto-commit-action/issues/25
+      - uses: stefanzweifel/[email protected]
+        with:
+          commit_message: Automatic Fix of Code Style
+          branch: ${{ github.head_ref }}
+
+      # check if some unfixable code style issues remain
+      - run: composer check-cs

composer.json

@@ -2,10 +2,17 @@
     "name": "bernhardwebstudio/pipefy-php-sdk",
     "extra": [],
     "description": "An SDK for the PHP GraphQL API",
+    "scripts": {
+        "check-cs": "./vendor/bin/ecs check",
+        "fix-cs": "./vendor/bin/ecs check --fix"
+    },
+    "keywords": ["GraphQL", "Pipefy"],
     "require-dev": {
         "overblog/graphql-php-generator": "^0.12.6",
         "symfony/expression-language": "^5.2",
         "rector/rector": "^0.9.31",
+        "symplify/easy-coding-standard": "*",
+        "phpstan/phpstan": "*",
         "gmostafa/php-graphql-oqm": "^1.3"
     },
     "require": {