Setup Codecov

Author: axlon

.github/workflows/phpunit.yml

@@ -42,3 +42,7 @@ jobs:
           composer install --no-interaction --no-progress
       - name: Run PHPUnit
         run: ./vendor/bin/phpunit
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}