Improve PlayingQueue further by adding queue Duration, clear queue etc.

[iZakirSheikh]

As a developer, I want to add more features to the playing queue dialog of my app, so that I can provide a better user experience and more control over the playback.

Acceptance Criteria:

• The app should display the total duration of the playing queue in the dialog header, along with the number of media files in the queue.
• The app should provide an option to clear the entire playing queue in one click, such as a button or a menu item.
• The app should also provide options to perform other operations on the playing queue, such as shuffle, repeat, save as playlist, etc.
• The app should handle any errors or exceptions that may occur while performing these operations.

Additional Notes:

• The app should provide a user-friendly and intuitive interface for interacting with the playing queue dialog, such as icons, tooltips, animations, etc.