implented adding year-month

app/ui/AddMonthButton.tsx

@@ -1,9 +1,11 @@
 import { PlusCircleIcon } from "@heroicons/react/24/outline";
+import React from "react";
 
 export interface AddMonthButtonProps {
+    yearMonth: number;
 }
 
-export const AddMonthButton:FC<AddMonthButtonProps> = () =>
-<span className='grid self-center' data-tip="Dodaj novi mjesec">
+export const AddMonthButton:React.FC<AddMonthButtonProps> = ({ yearMonth }) =>
+<a href={`/year-month/${yearMonth}/add`} className='grid self-center tooltip' data-tip="Dodaj novi mjesec">
     <PlusCircleIcon className="h-[1em] w-[1em] cursor-pointer text-4xl" />
-</span>
+</a>