feat: add prisma support, admin panel and auth

app/admin/categories/page.tsx

@@ -0,0 +1,18 @@
+import React from 'react';
+import { prisma } from '@/app/lib/prisma';
+import CategoryManager from './CategoryManager';
+
+export const dynamic = 'force-dynamic';
+
+export default async function AdminCategoriesPage() {
+  const categories = await prisma.category.findMany({
+    include: {
+      _count: {
+        select: { items: true }
+      }
+    },
+    orderBy: { createdAt: 'asc' }
+  });
+
+  return <CategoryManager categories={categories} />;
+}