Compatibility with PHP 8.4

[driskell]

When using the framework (in phpbrew) you get deprecations with PHP 8.4:

PHP Deprecated:  CLIFramework\Application::__construct(): Implicitly marking parameter $container as nullable is deprecated, the explicit nullable type must be used instead in phar:///Users/xxxxx/bin/phpbrew/vendor/corneltek/cliframework/src/Application.php on line 103
PHP Deprecated:  CLIFramework\Application::__construct(): Implicitly marking parameter $parent as nullable is deprecated, the explicit nullable type must be used instead in phar:///Users/xxxxx/bin/phpbrew/vendor/corneltek/cliframework/src/Application.php on line 103
PHP Deprecated:  CLIFramework\CommandBase::__construct(): Implicitly marking parameter $parent as nullable is deprecated, the explicit nullable type must be used instead in phar:///Users/xxxxx/bin/phpbrew/vendor/corneltek/cliframework/src/CommandBase.php on line 86
PHP Deprecated:  CLIFramework\Logger::__construct(): Implicitly marking parameter $container as nullable is deprecated, the explicit nullable type must be used instead in phar:///Users/xxxxx/bin/phpbrew/vendor/corneltek/cliframework/src/Logger.php on line 75
PHP Deprecated:  CLIFramework\Command::__construct(): Implicitly marking parameter $parent as nullable is deprecated, the explicit nullable type must be used instead in phar:///Users/xxxxx/bin/phpbrew/vendor/corneltek/cliframework/src/Command.php on line 30
PHP Deprecated:  CLIFramework\Command\output(): Implicitly marking parameter $opts as nullable is deprecated, the explicit nullable type must be used instead in phar:///Users/xxxxx/bin/phpbrew/vendor/corneltek/cliframework/src/Command/MetaCommand.php on line 39