add main menu navigation and door lock charges page

client/src/constants/menuItems.js

@@ -0,0 +1,15 @@
+import DoorLockCharges from "../scenes/DoorLockCharges";
+import Home from "../scenes/Home";
+
+export const mainMenuItems = [
+    {
+        title: 'Home',
+        url: '/',
+        component: Home,
+    },
+    {
+        title: 'Door Lock Charges',
+        url: '/door-lock-charges',
+        component: DoorLockCharges,
+    },
+];