Add documentation for glob patterns in ->in() method

[mozex]

This commit adds documentation for the recently merged feature that allows the use of PHP glob patterns in the ->in() method. This feature was introduced in the following pull request:

• Pull Request #829

The new documentation explains how to use glob patterns in Pest's configuration file to specify multiple directories or files with a single pattern and provides examples for better understanding:

1. Applying a base test case class to all test files in a directory that match a specific pattern:

// tests/Pest.php
uses(Tests\TestCase::class)->in('Feature/*Job*.php');

2. Using a glob pattern to match multiple directories in different modules while applying multiple test case classes and traits:

// tests/Pest.php
uses(
    DuskTestCase::class,
    DatabaseMigrations::class
)->in('../Modules/*/Tests/Browser');