implements new Storage API for handleEventsForBackgroundURLSession#2481

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brennanMKE wants to merge 4 commits intomainfrom stehlib.storage-background-events

+105-56

Commits on Oct 24, 2022

implements new Storage API for handleEventsForBackgroundURLSession
Brennan Stehling
committed
handles race condition and coordinates with tests for handling behavior
Brennan Stehling
committed
notifies for StorageBackgroundEventsRegistryWaiting only when notificationCenter is defined
Brennan Stehling
committed
makes StorageBackgroundEventsRegistry work as a singleton so the actor protects state
Brennan Stehling
committed