feat(auth): implement incremental auth updates with queue integration

- Added support for incremental auth updates using `AuthUpdate` and `AuthUpdateAction`.
- Integrated `SetAuthUpdateQueue` to propagate updates through a dedicated channel.
- Introduced new methods for handling auth add, modify, and delete actions.
- Updated service to ensure auth update queues are correctly initialized and consumed.
- Improved auth state synchronization across core and file-based clients with real-time updates.
- Refactored redundant auth handling logic for better efficiency and maintainability.

sdk/cliproxy/watcher.go

@@ -25,5 +25,8 @@ func defaultWatcherFactory(configPath, authDir string, reload func(*config.Confi
 			w.SetConfig(cfg)
 		},
 		snapshotAuths: func() []*coreauth.Auth { return w.SnapshotCoreAuths() },
+		setUpdateQueue: func(queue chan<- watcher.AuthUpdate) {
+			w.SetAuthUpdateQueue(queue)
+		},
 	}, nil
 }