feat:#30 reactive URL parameters RoomOccupation

frontend/src/helpers/dates.ts

@@ -0,0 +1,8 @@
+/**
+ * Format a date to a string in the format "YYYYMMDD".
+ * @param date - The date to format
+ * @returns string - The formatted date
+ */
+export function formatYearMonthDay(date: Date): string {
+  return date.toISOString().split("T")[0].replace(/-/g, "");
+}