## Summary
Add `ShutdownService` and `OnShutdown` decorator for more unified way to
shutdown different components. Use this new way in the following
components:
- HTTP(S) server
- Pruning service
- Push connection
- License
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Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>
