KDEReview for Kontrast

[Carl Schwan]

Hi,
I would like to move Kontrast, a contrast checker application, to KDEReview. Kontrast can check if two colors pass the WCAG 2.0 specification and save some user's favorite color combinations.

Some screenshots of the application and a design review from the VSG is available here: https://invent.kde.org/accessibility/kontrast/-/issues/1

>From a code point of view, the application is very simple, but I still would appreciate a general code review on it (it's my first Qt app written from scratch). The code is available here: https://invent.kde.org/accessibility/kontrast

I don't plan to add new features and would like after the KDEReview, to release a first version of the application, and then move it to the release service so that the application gets regularly translations improvement.

Thanks
Carl