Make it compile against qt6

CMakeLists.txt

@@ -4,7 +4,7 @@ project(kwrited)
 set(PROJECT_VERSION "5.24.80")
 
 set(QT_MIN_VERSION "5.15.0")
-set(KF5_MIN_VERSION "5.86")
+set(KF5_MIN_VERSION "5.90")
 set(KDE_COMPILERSETTINGS_LEVEL "5.82")
 
 set(CMAKE_CXX_STANDARD 17)
@@ -21,7 +21,7 @@ include(FeatureSummary)
 include(KDEClangFormat)
 include(KDEGitCommitHooks)
 
-find_package(Qt5 ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS
+find_package(Qt${QT_MAJOR_VERSION} ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS
     Gui
 )
 
@@ -97,7 +97,7 @@ else ()
 endif ()
 
 # The .notifyrc file is common
-install(FILES kwrited.notifyrc DESTINATION ${KDE_INSTALL_KNOTIFY5RCDIR})
+install(FILES kwrited.notifyrc DESTINATION ${KDE_INSTALL_KNOTIFYRCDIR})
 
 # add clang-format target for all our real source files
 file(GLOB_RECURSE ALL_CLANG_FORMAT_SOURCE_FILES *.cpp *.h)