Fix tests

php 8.1

Update README.md

code-style

Add builder methods for tty and idleTimeout options

Update BuilderFake.php

Laravel & Symfony console commands (#16)

* Pass output to Laravel & Symfony console commands

Bump symfony/process to "^4.4.2" to support Terminal::data feature

Update composer.lock

Reset captured. Test "run" as array. Implement "toString"

* Reset captured commands.
* Test that a command passed as an array is executed.
* Implemented the "toString" method that returns the current (or given) command as a string.