Function: du
This tool belongs to the Gorilla file system. It is a simple file system that allows users to perform basic file operations such as navigating directories, creating files and directories, reading and writing to files, etc. Tool description: Estimate the disk usage of a directory and its contents.
Parameters: human_readable: type: boolean
description: If True, returns the size in human-readable format (e.g., KB, MB). 
default: no
Response: disk_usage: type: string
description: The estimated disk usage.