Integrate Redux for state management, replace useState with Redux store

actions/qrCodeActions.ts

@@ -0,0 +1,6 @@
+import { createAction } from '@reduxjs/toolkit';
+import { QRCode } from '../types';
+
+export const addQRCode = createAction<QRCode>('qrCodes/addQRCode');
+export const toggleBookmark = createAction<number>('qrCodes/toggleBookmark');
+export const deleteQRCode = createAction<number | null>('qrCodes/deleteQRCode');