Merge pull request #3642 from nextcloud/enhancement/cli-sync-debug-output

lib/BackgroundJob/SyncJob.php

lib/Command/SyncAccount.php

lib/Events/SynchronizationEvent.php

lib/IMAP/MailboxSync.php

lib/IMAP/Threading/ThreadBuilder.php

lib/Listener/AccountSynchronizedThreadUpdaterListener.php

lib/Listener/DeleteDraftListener.php

lib/Listener/DraftMailboxCreatorListener.php

lib/Listener/SaveSentMessageListener.php

lib/Listener/TrashMailboxCreatorListener.php

lib/Service/Classification/ImportanceClassifier.php

lib/Service/MailManager.php

lib/Service/Sync/ImapToDbSynchronizer.php

lib/Service/Sync/SyncService.php

lib/Support/ConsoleLoggerDecorator.php

lib/Support/PerformanceLogger.php

lib/Support/PerformanceLoggerTask.php

tests/Integration/Framework/ImapTestAccount.php

tests/Unit/IMAP/MailboxSyncTest.php

tests/Unit/IMAP/Threading/ThreadBuilderTest.php