Add quick Scale button for Power Display

### Description of the new feature / enhancement

A "Quick Scale" button in Power Display

### Scenario when this would be used?

I'm a lecturer who often need to show my screen to the students, so, sometimes I need to scale my screen to 200% so my students can see better and scale back to 150% or 125% when I use it for my own work. I love the Power Display for its convenience, and I think it would be a great enhancement if there is a dedicated Quick Scale button that can also be added to the Profile. Thank you so much for your time.

### Supporting information

_No response_

The issue does not name files, tests, or an entry point. Start by locating the Power Display UI and the existing display-scaling and Profile settings; confirm how current scale values are applied. Done means a dedicated Quick Scale button can switch to commonly used values such as 200%, 150%, or 125% and can be added to a Profile.

Written by the indexing model from the issue text.