added version to priority-queue and moved to utils to follow dom loading pattern

utils/priority-queue.js

@@ -0,0 +1,29 @@
+/**
+ * @template T
+ */
+export class PriorityQueue extends Array {
+    /**
+     * @param {{comparator: (a:T, B:T) => number | boolean}} options
+     */
+    constructor({comparator}) {
+        super();
+    }
+    
+
+    /**
+     * @param {T} value 
+     */
+    enqueue(value) {
+        this.push(value);
+        this.sort(comparator);
+    }
+    
+    /**
+     * @returns {T}
+     */
+    dequeue() {
+        return this.shift();
+    }
+}
+export default PriorityQueue;
+globalThis.PriorityQueue = PriorityQueue;