added backend and 2 endpoints fetch

frontend/src/pages/NotFound.jsx

@@ -0,0 +1,14 @@
+import { Alert, Button } from "react-bootstrap";
+import { Link } from "react-router-dom";
+
+const NotFound = () => (
+  <Alert variant="danger" className="text-center">
+    <Alert.Heading>404 - Page Not Found</Alert.Heading>
+    <p>The page you're looking for doesn't exist.</p>
+    <Button as={Link} to="/" variant="outline-danger">
+      Go Home
+    </Button>
+  </Alert>
+);
+
+export default NotFound;