Cleanup actions static analysis

.github/workflows/static.yml

@@ -0,0 +1,54 @@
+name: Static Analysis
+
+on: ['push', 'pull_request']
+
+jobs:
+  cs:
+    runs-on: ubuntu-latest
+
+    name: Code Style
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: 7.4
+        tools: composer:v2
+        coverage: none
+
+    - name: Install Dependencies
+      run: composer update --no-interaction --prefer-dist --no-progress
+
+    - name: Run Rector
+      run: vendor/bin/rector process src --dry-run
+
+    - name: Run PHP-CS-Fixer
+      run: vendor/bin/php-cs-fixer fix -v --allow-risky=yes --dry-run
+
+  phpstan:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        dependency-version: [prefer-lowest, prefer-stable]
+
+    name: PHPStan ${{ matrix.dependency-version }}
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: 7.4
+        tools: composer:v2
+        coverage: none
+
+    - name: Install Dependencies
+      run: composer update --prefer-stable --no-interaction --prefer-dist --no-progress
+
+    - name: Run PHPStan
+      run: vendor/bin/phpstan analyse