feat: business_component에 로딩바 추가

packages/common/business_components/src/ui/loadingBar/index.tsx

@@ -0,0 +1,20 @@
+import React from 'react';
+import { LoadingWithAnimation } from '@common/components/ui/loading';
+
+interface LoadingOverlayProps {
+  isLoading: boolean;
+}
+
+const LoadingOverlay: React.FC<LoadingOverlayProps> = ({ isLoading }) => {
+  if (!isLoading) return null;
+
+  return (
+    <div className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50 z-50">
+      <div className="relative w-16 h-16">
+        <LoadingWithAnimation color="primary" />
+      </div>
+    </div>
+  );
+};
+
+export default LoadingOverlay;