Add config-diff CLI Command (#1168)

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Co-authored-by: Michael Kaufmann <d00p@froxlor.org>

bin/froxlor-cli

@@ -26,6 +26,7 @@
 
 declare(strict_types=1);
 
+use Froxlor\Cli\ConfigDiff;
 use Symfony\Component\Console\Application;
 use Froxlor\Cli\RunApiCommand;
 use Froxlor\Cli\ConfigServices;
@@ -61,4 +62,5 @@ $application->add(new InstallCommand());
 $application->add(new MasterCron());
 $application->add(new UserCommand());
 $application->add(new ValidateAcmeWebroot());
+$application->add(new ConfigDiff());
 $application->run();