GitHub Actions: Add pint workflow (#19)

Author: tangrufus

.github/workflows/pint.yml

@@ -0,0 +1,34 @@
+name: Pint
+
+on:
+  workflow_dispatch:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}
+  cancel-in-progress: true
+
+permissions: {}
+
+jobs:
+  pint:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.4'
+          tools: pint:1
+          coverage: none
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - run: composer lint