feat(core): Unify application components shutdown (#8097)

## 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

---------

Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>

packages/cli/src/commands/start.ts

@@ -63,7 +63,7 @@ export class Start extends BaseCommand {
 
 	protected activeWorkflowRunner: ActiveWorkflowRunner;
 
-	protected server = new Server();
+	protected server = Container.get(Server);
 
 	private pruningService: PruningService;
 
@@ -101,14 +101,6 @@ export class Start extends BaseCommand {
 
 			await this.externalHooks?.run('n8n.stop', []);
 
-			// Shut down License manager to unclaim any floating entitlements
-			// Note: While this saves a new license cert to DB, the previous entitlements are still kept in memory so that the shutdown process can complete
-			await Container.get(License).shutdown();
-
-			if (this.pruningService.isPruningEnabled()) {
-				this.pruningService.stopPruning();
-			}
-
 			if (Container.get(MultiMainSetup).isEnabled) {
 				await this.activeWorkflowRunner.removeAllTriggerAndPollerBasedWorkflows();