Asc Build Lifecycle

This handles the full lifecycle of App Store Connect builds after they've been uploaded. You can track processing status, find the latest build for a version, figure out the next safe build number to use, and clean up old builds with expiration rules. The cleanup commands include a dry run mode, which is always nice to see before you delete things. It explicitly steers you away from basic upload commands toward the full publish flows in asc, which makes sense since you usually want the whole pipeline anyway. Good for CI systems that need to wait on processing or maintain build retention policies without manual pruning.