Add missing auth check to hammer page

app/routes/hammer.tsx

@@ -10,10 +10,24 @@ import {
   Input,
   Stack,
   StackDivider,
-  Text,
+  Text
 } from "@chakra-ui/react";
 import { type FormEvent, useState } from "react";
 
+export async function loader({ context }: { context: RequestContext }) {
+  const { current_user: currentUser } = context.data;
+
+  if (!currentUser)
+    throw new Response(null, {
+      status: 401
+    });
+
+  if (!(currentUser & 1 << 5))
+    throw new Response(null, {
+      status: 403
+    });
+}
+
 export function meta() {
   return [{ title: "Hammer - Car Crushers" }];
 }