keyup event introduced for color changing from input box

[ImamHossainRoni]

Description

This pull request adds a new event named keyup to this package. The event is triggered when the user releases a key on the keyboard.

Changes

• Added a new keyup event to the npm package.
• Not Updated the documentation to include the new event and explain its behavior.
• Tested the event to confirm it works as expected.

Benefits

This new event allows developers to respond to keyup events in their applications, which can be useful for various purposes such as implementing keyboard shortcuts, detecting key releases, and more.

Possible drawbacks

None.

How to test

To test the keyup event, follow these steps:

1. Import the npm package into your project.
2. Register a listener for the keyup event.
3. Trigger the event by releasing a key on the keyboard.
4. Observe the behavior of the event and confirm that it works as expected.

Checklist

• Code has been written and tested
• The branch is up to date with the latest changes from the main branch