CLI-Skript `studip` einführen und alte Skripte entsprechend umstellen

cli/Commands/AbstractCommand.php

cli/Commands/AbstractPluginCommand.php

cli/Commands/Base/Dump.php

cli/Commands/Checks/Compatibility.php

cli/Commands/Checks/GlobalizedConfig.php

cli/Commands/Checks/HelpTours.php

cli/Commands/Checks/compatibility-rules/studip-4.0.php

cli/Commands/Checks/compatibility-rules/studip-4.2.php

cli/Commands/Checks/compatibility-rules/studip-4.4.php

cli/Commands/Checks/compatibility-rules/studip-5.0.php

cli/Commands/CleanupAdmissionRules.php

cli/Commands/Cronjobs/CronjobExecute.php

cli/Commands/Cronjobs/CronjobList.php

cli/Commands/Cronjobs/CronjobWorker.php

cli/Commands/DB/Dump.php

cli/Commands/DB/MigrateEngine.php

cli/Commands/DB/MigrateFileFormat.php

cli/Commands/Files/Dump.php

cli/Commands/Fix/Biest7789.php

cli/Commands/Fix/Biest7866.php