Run php linter on github actions

Signed-off-by: Julius Härtl <jus@bitgrid.net>

.github/workflows/lint.yml

@@ -0,0 +1,36 @@
+name: Lint
+on: pull_request
+
+jobs:
+  php-linters:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php-versions: ['7.0', '7.1', '7.2', '7.3', 7.4]
+    name: php${{ matrix.php-versions }} lint
+    steps:
+    - name: Checkout
+      uses: actions/checkout@master
+    - name: Set up php${{ matrix.php-versions }}
+      uses: shivammathur/setup-php@master
+      with:
+        php-version: ${{ matrix.php-versions }}
+        coverage: none
+    - name: Lint
+      run: composer run lint
+
+  node-linters:
+    runs-on: ubuntu-latest
+    name: ESLint
+    steps:
+    - uses: actions/checkout@master
+    - name: Set up Node
+      uses: actions/setup-node@v1
+      with:
+        node-version: 12.x
+    - name: npm install
+      run: npm ci
+    - name: eslint
+      run: npm run lint
+    env:
+      CI: true

.gitignore

@@ -1,4 +1,5 @@
 tests/clover.xml
+.idea
 node_modules/
 js/
 *.spec

composer.json

@@ -13,5 +13,8 @@
             "email": "jus@bitgrid.net"
         }
     ],
-    "require": {}
+    "require": {},
+    "scripts": {
+      "lint": "find . -name \\*.php -not -path './vendor/*' -print0 | xargs -0 -n1 php -l"
+    }
 }