feat: add campaign configuration controls

components/ui/skeleton.tsx

@@ -0,0 +1,19 @@
+import * as React from "react";
+import { cn } from "@/lib/utils";
+
+const Skeleton = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn(
+      "relative overflow-hidden rounded-md bg-muted/60 before:absolute before:inset-0 before:translate-x-[-100%] before:animate-[shimmer_1.5s_infinite] before:bg-gradient-to-r before:from-transparent before:via-white/20 before:to-transparent",
+      className,
+    )}
+    {...props}
+  />
+));
+Skeleton.displayName = "Skeleton";
+
+export { Skeleton };