Add gemini extensions link command (#7241)

Co-authored-by: Bryan Morgan <bryanmorgan@google.com>

scripts/copy_files.js

@@ -53,4 +53,25 @@ if (!fs.existsSync(sourceDir)) {
 }
 
 copyFilesRecursive(sourceDir, targetDir);
+
+// Copy example extensions into the bundle.
+const packageName = path.basename(process.cwd());
+if (packageName === 'cli') {
+  const examplesSource = path.join(
+    sourceDir,
+    'commands',
+    'extensions',
+    'examples',
+  );
+  const examplesTarget = path.join(
+    targetDir,
+    'commands',
+    'extensions',
+    'examples',
+  );
+  if (fs.existsSync(examplesSource)) {
+    fs.cpSync(examplesSource, examplesTarget, { recursive: true });
+  }
+}
+
 console.log('Successfully copied files.');