Singleton added

src/Contracts/Loggable.php

@@ -0,0 +1,17 @@
+<?php
+
+/**
+ * @package: patterns
+ * @author: Yevhen Odynets
+ * @date: 2025-07-03
+ * @time: 07:36
+ */
+
+declare(strict_types = 1);
+
+namespace Contracts;
+
+interface Loggable
+{
+    public static function getInstance(): static;
+}