…inkedList functionality

- Introduced `EmptyAwareSinglyLinkedList`, a subclass of `SinglyLinkedList` that emits an `empty` event when the list becomes empty due to `reset`, `shift`, or `remove` operations.
- Added `nodes()` iterator method to `DoublyLinkedList` for iterating over nodes directly.
- Enhanced unit tests for `DoublyLinkedList` and `SinglyLinkedList` to cover edge cases and new functionality.
- Added comprehensive tests for `EmptyAwareSinglyLinkedList` to validate `empty` event emission under various scenarios.
- Improved code formatting and consistency.

- Replaced `setInvalidateCallback` with a more flexible `addPushHandler` method, allowing multiple handlers for push notifications.
- Introduced the `PushHandler` type to standardize push notification processing.
- Refactored `RedisCommandsQueue` to use a `#pushHandlers` array, enabling dynamic and modular handling of push notifications.
- Updated `RedisClient` to leverage the new handler mechanism for `invalidate` push notifications, simplifying and decoupling logic.

…mplete

- Introduced `waitForInflightCommandsToComplete` method to asynchronously wait for all in-flight commands to finish processing.
- Utilized the `empty` event from `#waitingForReply` to signal when all commands have been completed.

…-queuefd

- Added `#inMaintenance` property and `set inMaintenance` setter to track maintenance mode state.
- Introduced `#maintenanceCommandTimeout` and `setMaintenanceCommandTimeout` method to dynamically adjust command timeouts during maintenance.
- Refactored timeout logic to prioritize `#maintenanceCommandTimeout` over individual command timeouts.
- `CommandTimeoutDuringMaintananceError` is used when in maintenance mode.

…s handling

- Changed `#initiateSocket` to a streamlined asynchronous method to handle socket readiness and initialization logic.
- Added `waitForReady` method to `RedisSocket` to await socket readiness.
- Introduced `#createSocket` method in `RedisClient` to decouple socket creation from initialization logic.
- Refactored `connect` method to ensure proper socket readiness and initialization before proceeding.

…ndling

- Introduced `#inMaintenance` property and setter to track maintenance mode state in `RedisSocket`.
- Added `#maintenanceTimeout` and `setMaintenanceTimeout` method to dynamically adjust socket timeouts during maintenance.
- Enhanced timeout error handling to differentiate between regular timeouts (`SocketTimeoutError`) and maintenance-specific timeouts (`SocketTimeoutDuringMaintananceError`).

- Introduced `maintPushNotifications` option to control how the client handles Redis Enterprise maintenance push notifications (`disabled`, `enabled`, `auto`).
- Added `maintMovingEndpointType` option to specify the endpoint type for reconnecting during a MOVING notification (`auto`, `internal-ip`, `external-ip`, etc.).
- Added `maintRelaxedCommandTimeout` option to define a relaxed timeout for commands during maintenance.
- Added `maintRelaxedSocketTimeout` option to define a relaxed timeout for the socket during maintenance.
- Enforced RESP3 requirement for maintenance-related features (`maintPushNotifications`).

- Introduced `#pausedForMaintenance` flag to temporarily halt writing commands to the socket during maintenance windows.
- Added `#resumeFromMaintenance` method to handle socket replacement and resume operations after maintenance.
- Updated `#write` method to respect the `#pausedForMaintenance` flag, preventing new commands from being written during maintenance.

- Introduced `EnterpriseMaintenanceManager` to manage Redis Enterprise maintenance events and push notifications.
- Integrated `EnterpriseMaintenanceManager` into `RedisClient` to handle maintenance push notifications and manage socket transitions.
- Implemented graceful handling of MOVING, MIGRATING, and FAILOVER push notifications, including socket replacement and timeout adjustments.