Fix phpcs errors

[fadrian06]

This pull request primarily updates development dependencies and improves code style consistency by reformatting code and updating configuration files. The changes also include minor improvements to test code readability and structure. No production logic is affected.

Dependency and configuration updates:

• Updated composer.json to require newer versions of flightphp/container (now ^1.3) and squizlabs/php_codesniffer (now ^4.0).
• Overhauled phpcs.xml.dist to use new reporting options, simplify ruleset structure, and improve formatting for coding standard enforcement.

Code style and formatting improvements:

• Refactored conditional expressions throughout the codebase (e.g., in Dispatcher.php, RouteCommand.php, and Request.php) to use single-line format, improving readability and consistency. [1] [2] [3] [4]

Test code improvements:

• Updated anonymous function and class declarations in test files (e.g., EngineTest.php, DispatcherTest.php, EventSystemTest.php) to use a more concise and consistent style. Also improved method formatting and added placeholder comments for clarity. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23]

[n0nag0n]

Lots of whitespace adjustments, should be a fun time!