Create ModelNode.tsx

src/ModelNode.tsx

@@ -0,0 +1,13 @@
+import { Handle, Position } from 'reactflow';
+
+export function ModelNode({ data }) {
+  return (
+    <>
+      <Handle type="target" position={Position.Top} />
+      <div>
+        <div>{data.label}</div>
+      </div>
+      <Handle type="source" position={Position.Bottom} />
+    </>
+  );
+}