Support for `BGContinuedProcessingTask` on iOS 26+

szw0407

It is proper to add support for long running background tasks (e.g., ML inference). Personally I think it is really similar to what Android foreground tasks can do.

szw0407

I have forked the project and tried some modifications. If it makes sense, I shall add some update or descriptions.

Haltarys

Interested in this being supported as well!

NiuXiaoGuang

我很期待