Better loading (and some other misc cleanup)

src/app/[...file]/components/loading.tsx

@@ -0,0 +1,9 @@
+import * as style from './loading.css';
+
+export default function Loading() {
+	return (
+		<div className={style.loading_squares}>
+			{style.loading.map((style, index) => <div key={index} className={style}></div>)}
+		</div>
+	);
+}