fix(queue-28): toString function added

Author: Wakidur Rahaman

data-structure/queue/queue-original.js

@@ -0,0 +1,13 @@
+import LinkedList from "../linked-list/linked-list-original";
+
+export default class Queue {
+  constructor() {
+    /**
+     * We're going to implement Queue based on LinkedList since the two
+     * structure are quite similar. Namely, they both operate mostly on
+     * the element at the beginning and the end. Compare enqueue/dequeue
+     * operations of Queue with append/deleteHead operations of LinkedList
+     */
+    this.linkedList = new LinkedList();
+  }
+}