[Feature request] Add option to set Crunchyroll settings per download

[yeikel]

In the current setup, the Crunchyroll configuration is a global setting that applies to all downloads in the queue, regardless of when they were added.

It would be beneficial to allow these settings to be configured per download, enabling different configurations for the Downloads queue.

Example scenario:

Download Episode 1-10 with the Japanese dub and no subtitles.
Download Episode 10-20 with a different dub.

To achieve this, it seems necessary to download each batch independently where we need to wait for one to complete before scheduling the next. Additionally, scheduling multiple batches simultaneously does not appear to be possible as changing the configuration mid-download overwrites the previous configuration of the existing in-progress downloads