Aiotaskqueue

Feat

- **redis**: automatically trim stream
- allow passing parameters directly into `task` decorator

Feat

- add retry extension

Feat

- wrap ResultBackend.get return value into Some[] container type to differentiate between missing and None values
- add ResultBackend.get method
- allow enqueueing tasks with specific id
- **result-backend**: allow configuring result key in Configuration

Fix

- skip tasks in "sequential" if there's a result present already
- **scheduler**: don't call OnScheduleExtension when initializing tasks on scheduler startup

Feat

- allow configuring result backend TTL

Feat

- **worker**: add shutdown deadline

Feat

- **worker**: add OnTaskException and OnTaskCompletion extensions
- **scheduler**: add OnScheduleExtension