style: format code with Prettier

This commit fixes the style issues introduced in cd2aaa3 according to the output
from Prettier.

Details: None

front/src/lib/cart.ts

@@ -3,7 +3,6 @@ import { type Writable, get, writable } from "svelte/store";
 import { type CartItem, type Item } from "./types";
 import { getItemByUUID, postVerifyCart } from "./test-api";
 
-
 function getLocal(): Record<string, CartItem> {
     let localData: Record<string, CartItem> = {};
 

front/src/routes.js

@@ -45,7 +45,7 @@ const routes = {
         asyncComponent: () => import("./pages/PageBooking.svelte"),
         loadingComponent: PageLoading,
         conditions: [],
-        userData: { showNavBar: true, fullWidth: true }
+        userData: { showNavBar: true, fullWidth: true },
     }),
     "/ForOhFor": wrap({
         component: Page404,