[Feature Request] Schedule download retries and set download intervals

[bk1412]

What feature should be added to Suwayomi?

Suwayomi currently does not support multi-threading or other methods to speed up downloading, because multi-threading and other methods may speed up the blocking of the IP by the target source website, but some websites will be blocked (temporarily) even if they are downloaded with a single thread within a certain period of time, so I think I need a function that can set the download time interval, or how long to try to download again after failure (blocking), so as to solve the temporary block encountered after downloading multiple comics, and come back to see all failed in a few hours.

Why/Project's Benefit/Existing Problem

The advantage is that you don’t need to manually check for failed downloads multiple times. The automatic retry mechanism (or forced download interval) is a one-time solution. However, you also need to consider that in some cases, there may be a problem with the source, that is, the source is essentially problematic and cannot be downloaded anyway, to avoid an infinite loop.