Some bugfixes, along with finally adding channels to the filters.

fileslog.install

fileslog.module

fileslog.routing.yml

src/Commands/FileslogCommands.php

src/Controller/FilesLogController.php

src/FilesLogEntry.php

src/FilesLogManager.php

src/FilesLogManagerInterface.php

src/Form/FileslogClearLogConfirmForm.php

src/Form/FileslogFilterForm.php

src/Logger/FilesLog.php