added folder delete

api/routes/folder.routes.js

@@ -9,5 +9,7 @@ router.get('/folders/:id', folderController.getFoldersById);
 
 router.post('/folders', folderController.createFolder);
 router.put('/folders/:id', folderController.updateFolder);
+router.delete('/folders/:id', folderController.deleteFolder);
+
 
 module.exports = router;