In this unit, we'll implement two essential design patterns: the Command pattern and the Decorator pattern, aimed at enhancing our smart home automation and lighting system. These patterns help create a more flexible and expandable system for automation and lighting control.

1. Command Pattern:

   • Purpose: Encapsulates a request as an object, enabling parameterization, queuing, logging, and support for undoable operations.
   • Steps:
     • Define a command interface with an execute method.
     • Create concrete command classes (LightOnCommand, LightOffCommand) that implement this interface and perform specific actions.
     • Implement a receiver class (Light) with methods to turn the light on and off.
     • Use an invoker class (RemoteControl) to store and execute commands.

2. Decorator Pattern:

   • Purpose: Dynamically adds additional functionality to objects without altering their structure.
   • Steps:
     • Define a component interface or base class (Light).