implement queue to keep track of splitting and merging

src/routes/merge/+page.svelte

@@ -33,6 +33,8 @@
 
 		// Start continuous animation
 		interv = setInterval(animate, 1000 / FPS);
+
+		queue.push(new ArrRef(0, AMOUNT));
 	});
 
 	class ArrRef {
@@ -77,6 +79,8 @@
 		while (compr < b.length) (data[index + compr] = b.at(compr)), compr++;
 	}
 
+	/** @type {ArrRef[]} */
+	const queue = [];
 	/** Render a single frame of the sorting algorithm at a time on the canvas. */
 	function animate() {
 		// Clear canvas with black background