With `delete_old_custom_formats: false` and
`replace_existing_custom_formats: false`, if you comment out a CF in
your configuration, sync, uncomment it and sync again, you get an error
about duplicate CFs. This is because, once a CF is removed from the
configuration, it's also removed from the cache.
This change makes the cache more flexible. As long as a CF (created by
Recyclarr) exists either in the config OR in the service itself, it will
be kept in the cache. This means that temporarily disabling CFs in
configuration won't cause ownership issues.
When doing a `sync --preview`, new custom formats are not created and
thus they never get an ID greater than `0`. Because of this, a
dictionary that tracks duplicates based on ID would result in warnings
about duplicate scores that made no sense.
We now index by Trash ID instead of Format ID, which is more accurate.
Robert Dailey