Add benchmark action

.github/workflows/benchmark.yml

@@ -0,0 +1,39 @@
+name: Benchmark
+
+on: [push]
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: true
+      matrix:
+        # os: [ubuntu-latest, windows-latest]
+        os: [ubuntu-latest]
+        php: [8.1, 8.2]
+
+    name: PHP ${{ matrix.php }} / ${{ matrix.os }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Cache dependencies
+        uses: actions/cache@v3
+        with:
+          path: ~/.composer/cache/files
+          key: dependencies-php-${{ matrix.php }}-composer-${{ hashFiles('composer.json') }}-os-${{ matrix.os }}
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          coverage: xdebug
+
+      - name: Install dependencies
+        run: |
+          composer install --prefer-dist --no-interaction --no-suggest
+
+      - name: Create benchmarks
+        run: vendor/bin/phpbench run --report=aggregate