* Refactored Library Watcher to use Hangfire under the hood.
* Support .kavitaignore at root level.
* Refactored a lot of the library watching code to process faster and handle when FileSystemWatcher runs out of internal buffer space. It's still not perfect, but good enough for basic use.
* Make folder watching as experimental and default it to off by default.
* Revert #1479
* Tweaked the messaging for OPDS to remove a note about download role.
Moved some code closer to where it's used.
* Cleaned up how the events widget reports
* Fixed a null issue when deleting series in the UI
* Cleaned up some debug code
* Added more information for when we skip a scan
* Cleaned up some logging messages in CoverGen tasks
* More log message tweaks
* Added some debug to help identify a rare issue
* Fixed a bug where save bookmarks as webp could get reset to false when saving other server settings
* Updated some documentation on library watcher.
* Make LibraryWatcher fire every 5 mins
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