feat: add prisma support, admin panel and auth

app/admin/items/page.tsx

@@ -0,0 +1,20 @@
+import React from 'react';
+import { prisma } from '@/app/lib/prisma';
+import ItemManager from './ItemManager';
+
+export const dynamic = 'force-dynamic';
+
+export default async function AdminItemsPage() {
+  const items = await prisma.item.findMany({
+    include: {
+      category: true
+    },
+    orderBy: { createdAt: 'desc' }
+  });
+
+  const categories = await prisma.category.findMany({
+    orderBy: { title: 'asc' }
+  });
+
+  return <ItemManager items={items} categories={categories} />;
+}