feat: Add LoggerTrait for logging functionality with a placeholder log method

Author: tasuku43

tests/data/Project/Service/LoggerTrait.php

@@ -0,0 +1,18 @@
+<?php
+declare(strict_types=1);
+
+namespace TestProject\Service;
+
+use TestProject\Service\AuditLogger;
+use TestProject\Service\AuditTarget;
+
+trait LoggerTrait
+{
+    private AuditLogger $logger;
+
+    public function log(AuditTarget $target): void
+    {
+        // noop for test fixtures
+    }
+}
+