[QuickAccent]Theming support (#22446)
* Adding theme awereness
* Adding theming colors
* High contrast
* Downgrade ModernWPF package
* Adding ModernWPF and PowerToys.Common.UI to installer
* Removing unused file and MahApps
* Removed MahApps from installer string
* fix projects and setup
* removed PowerAccent
* addressed PR feedback
Co-authored-by: Davide <25966642+davidegiacometti@users.noreply.github.com>
