What is the `file` service configuration in symfony for?

@scotty_walker 

In Symfony, the file service configuration is used to define a service that represents a file on the filesystem. It allows you to work with files in a more object-oriented manner by providing methods to perform various file-related operations.

Some common use cases for the file service configuration include:

1. Uploading files: You can use the file service to handle file uploads in your application. It provides methods to validate, move, and rename uploaded files.
2. Reading and writing files: The file service can be used to read the contents of a file, write data to a file, or append data to an existing file.
3. File manipulation: You can use the file service to perform various file manipulation operations such as copying, deleting, and moving files.
4. File metadata: The file service allows you to retrieve metadata about a file, such as its size, permissions, and last modified date.

By configuring the file service in Symfony, you can easily manage file operations in your application in a standardized and reusable way.