Added tracking code form.

components/common/CopyButton.js

@@ -0,0 +1,23 @@
+import React, { useState } from 'react';
+import Button from './Button';
+
+const defaultText = 'Copy to clipboard';
+
+export default function CopyButton({ element, ...props }) {
+  const [text, setText] = useState(defaultText);
+
+  function handleClick() {
+    if (element?.current) {
+      element.current.select();
+      document.execCommand('copy');
+      setText('Copied!');
+      window.getSelection().removeAllRanges();
+    }
+  }
+
+  return (
+    <Button {...props} onClick={handleClick}>
+      {text}
+    </Button>
+  );
+}