New feature Added: Copy Button

[Amayl97]

This pull request adds a copy button to the password generator. When the user clicks on the copy button, the generated password is automatically copied to the clipboard, making it easier for users to use the password.

Changes

• Added a copy button next to the generated password.
• Implemented functionality to copy password to clipboard when button is clicked.
• Button is visible only when user clicks on generate password button.

Benefits

• Improves user experience by saving time and effort.
• Enhances usability of the password generator.