Instead of creating a CacheEntryRemovedEvent for each deleted files,
create a single CacheEntriesRemovedEvent which wrap multiple
CacheEntryRemovedEvent.
This allow listener to optimize the query they do when multiple files
are deleted at the same time (e.g. when deleting a folder).
Signed-off-by: Carl Schwan <carl.schwan@nextclound.com>
