[FEATURE] File system utilities

[kashifkhan0771]

Feature Description

The File System Utilities feature should provides a comprehensive set of functions designed to simplify and enhance file and directory operations within Go applications. These utilities should streamline common tasks related to files.
Some that I have on my mind are following:

1. File size formatter
2. Directory search for specific file extension
3. Directory size calculation
4. File comparison

Any other functions related to files can be discussed in this feature request and than added in pull request.

Use Case

Enhance file/directory operations

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Proposed Solution

Create a new package fsutils and all utility functions should be added in that package

Pseudo Code

func FormatFileSize(size int64) string { ... }
func FindFiles(root string, extension string) ([]string, error) { ... }
func GetDirectorySize(path string) (int64, error) { ... }
func AreFilesIdentical(file1, file2 string) (bool, error) { ... }