added missing lib/utils.ts in devui frontend (#1197)

Co-authored-by: Alex Lavaee <alexlavaee@microsoft.com>

.gitignore

@@ -15,6 +15,7 @@ downloads/
 eggs/
 .eggs/
 lib/
+!python/packages/devui/frontend/src/lib/
 lib64/
 parts/
 sdist/

python/packages/devui/frontend/src/lib/utils.ts

@@ -0,0 +1,6 @@
+import { type ClassValue, clsx } from "clsx"
+import { twMerge } from "tailwind-merge"
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs))
+}