Add async function to call backend API

Author: namitha2526

frontend/script.js

@@ -0,0 +1,12 @@
+async function callBackend() {
+  const output = document.getElementById("output");
+
+  try {
+    const response = await fetch("https://your-techie.onrender.com/");
+    const data = await response.json();
+
+    output.textContent = JSON.stringify(data, null, 2);
+  } catch (error) {
+    output.textContent = "Error connecting to backend: " + error;
+  }
+}