added js to copy vin on click

assets/javascripts/copy.js

@@ -0,0 +1,28 @@
+async function handleCopy(event) {
+  console.log("Copy link clicked");
+  // 1. Prevent the link from actually navigating
+  event.preventDefault();
+
+  // 2. Grab the text from our span
+  const text = document.getElementById('vin').innerText;
+
+  try {
+    // 3. Write to clipboard
+    await navigator.clipboard.writeText(text);
+    
+    // 4. Update the UI to show it worked
+    const link = event.target;
+    const originalText = link.innerText;
+    link.innerText = "Copied!";
+    link.style.color = "#4CAF50"; // Turn green
+
+    // 5. Reset after 2 seconds
+    setTimeout(() => {
+      link.innerText = originalText;
+      link.style.color = "";
+    }, 2000);
+
+  } catch (err) {
+    console.error('Unable to copy', err);
+  }
+}