Feature Proposal: streamUri Method for FilesystemAdapter

[mateuszanella]

Summary

Introduce a new method streamUri() in the FilesystemAdapter class to return a properly qualified URI for use with PHP's stream wrapper feature. This would allow developers to easily access files stored in various storage systems (e.g., S3, FTP, local storage) using PHP's native stream functions like fopen, file_get_contents, etc.

Motivation

Currently, the FilesystemAdapter class provides methods like url() to retrieve URLs for files, but there is no direct way to get a stream-compatible URI with a customizable prefix. For example:

An S3 bucket file could return s3://bucket-name/path/to/file.
A local file could return file:///path/to/file.

This feature would simplify working with PHP's stream functions by providing a consistent and storage-agnostic way to retrieve stream URIs.

This feature could be constructed via a Closure, similarly to the temporaryUrlCallback in the FilesystemAdapter class.

I am willing to write code for this feature.