Implement a feature in the UpWindowAngular component to allow the window to be displayed in grayscale mode.

1. Input Property:

   • Add an @Input() property to the UpWindowAngular component:

     @Input() grayscale: boolean = false;

2. CSS Styling:

   • Add a CSS class to apply the grayscale effect when the grayscale property is true:

     &.grayscale {
       backdrop-filter: grayscale(1);
     }

3. Update Component Logic:

   • Modify the component logic to handle the grayscale state when opening the window. This should include:
     • A new state variable in the parent component to control the grayscale mode.
     • Updating the openWindowExample method to set this new state variable.

Acceptance Criteria

• The grayscale property can be passed as an input to the UpWindowAngular component.
• The window applies the grayscale effect when grayscale is set to true.
• The feature works seamlessly with existing functionalities (e.g., blur, fullscreen, restrict).

Additional Notes

• Ensure the grayscale effect is visually tested across different browsers.
• Add unit tests to verify the functionality of the grayscale mode.