feat: update directory creation to include .keep file for empty directories

Signed-off-by: Noooste <83548733+Noooste@users.noreply.github.com>

frontend/src/hooks/useBucketObjects.ts

@@ -200,7 +200,7 @@ export function useBucketObjects(bucketName: string | null, currentPath: string
 
     try {
       const dirKey = currentPath ? `${currentPath}${dirName}/` : `${dirName}/`;
-      await objectsApi.upload(bucketName, dirKey, new File([], ''));
+      await objectsApi.upload(bucketName, dirKey, new File([], '.keep'));
       toast.success(`Directory "${dirName}" created successfully`);
       await fetchObjects(currentContinuationToken, true);
       return true;