Restructure folders and add day 3's solution

javascript/day_01/part1.mjs

@@ -0,0 +1,31 @@
+import { readFile } from "fs/promises";
+import { SortedList } from "../utils/javascript/SortedList.mjs";
+
+
+const fileToRead = `actual.input`;
+
+const list1 = new SortedList();
+const list2 = new SortedList();
+
+const file = await readFile(fileToRead, `utf-8`);
+for (const line of file.split(`\n`)) {
+	// console.log(line);
+	const [ l1Add, l2Add ] = line.split(/\s+/, 2);
+	list1.add(l1Add);
+	list2.add(l2Add);
+};
+
+if (list1.size !== list2.size) {
+	console.log(`The two lists are different lengths`);
+	process.exit(1);
+};
+
+const size = list1.size;
+let distance = 0;
+for (var i = 0; i < size; i++) {
+	const place1 = list1.at(i);
+	const place2 = list2.at(i);
+	distance += Math.abs(place2 - place1);
+}
+
+console.log(`Total Distance: ${distance}`);