* feat: ServiceManager & import multiple epub files
* Fix: merge chapter based on index of toc in file list
* notifcation when jobs get done
* Fix epub: only read table of content in navmap
* add update library to service manager
* add drive backup/restore to service manager
* add self host backup/restore to service manager
* add migrate novel to service manager
* add download chapter to service manager
* clean up
nyagami
078796784b