chore: playground layout

src/pages/playground/components/reference-params.tsx

@@ -0,0 +1,13 @@
+import '../style/reference-params.less';
+
+const ReferenceParams = () => {
+  return (
+    <div className="reference-params">
+      <span>Inference: 597 ms</span>
+      <span style={{ padding: '10px' }}></span>
+      <span>Tokens/s: 561</span>
+    </div>
+  );
+};
+
+export default ReferenceParams;