kquickimageedit: add Qt6 support

pkgs/development/libraries/kquickimageedit/default.nix

···
 { lib
-, mkDerivation
+, stdenv
 , fetchFromGitLab
 , extra-cmake-modules
+, qtbase
+, qtdeclarative
 }:
 
-mkDerivation rec {
+stdenv.mkDerivation rec {
   pname = "kquickimageeditor";
   version = "0.3.0";
 
···
   };
 
   nativeBuildInputs = [ extra-cmake-modules ];
+  buildInputs = [ qtbase qtdeclarative ];
+  cmakeFlags = ["-DQT_MAJOR_VERSION=${lib.versions.major qtbase.version}"];
+  dontWrapQtApps = true;
 
   meta = with lib; {
     description = "Set of QtQuick components providing basic image editing capabilities";

pkgs/top-level/qt6-packages.nix

···
   kdsoap = callPackage ../development/libraries/kdsoap { };
 
   futuresql = callPackage ../development/libraries/futuresql { };
+  kquickimageedit = callPackage ../development/libraries/kquickimageedit { };
 
   qca = pkgs.darwin.apple_sdk_11_0.callPackage ../development/libraries/qca {
     inherit (qt6) qtbase qt5compat;