/*
- build tree const folderTree = buildTree(0, []); */
/* 2. relocate folder relocateFolder(folderTree, "g", "f", "root"); */
/* 3. add folder addFolder(CATEGORY["mainCategory"][0]["subCategory"][5]["name"], newFolderCount, "파이썬 배우기", folderTree, "g"); */
/* 4. remove folder removeFolder("Python 0 g", "g", folderTree); */
/* 5. add Link addLink(folderTree, "a", "root", "vanilla.com"); */
/* 6. remove Link removeLink(folderTree, "a", "root", "vanilla.com"); */