Further fixes on icon install

Fixes #981

data/icons/CMakeLists.txt

-#add_subdirectory(breeze-dark)
+add_subdirectory(breeze-dark)
 
 ecm_install_icons(ICONS
   128-actions-kdenlive-select-all.png

data/icons/breeze-dark/CMakeLists.txt

-INSTALL(FILES
-  16/keyframe.svg
-  16/keyframe-add.svg
-  16/keyframe-disable.svg
-  16/keyframe-duplicate.svg
-  16/keyframe-next.svg
-  16/keyframe-previous.svg
-  16/keyframe-record.svg
-  16/keyframe-remove.svg
-  16/add-subtitle.svg
-  DESTINATION ${ICON_INSTALL_DIR}/breeze-dark/actions/16)
+if(KF5CoreAddons_VERSION VERSION_LESS "5.77")
+    INSTALL(FILES
+      22/add-subtitle.svg
+      DESTINATION ${ICON_INSTALL_DIR}/breeze-dark/actions/22)
+endif()
 
-INSTALL(FILES
-  22/keyframe.svg
-  22/keyframe-add.svg
-  22/keyframe-disable.svg
-  22/keyframe-duplicate.svg
-  22/keyframe-next.svg
-  22/keyframe-previous.svg
-  22/keyframe-record.svg
-  22/keyframe-remove.svg
-  22/add-subtitle.svg
-  DESTINATION ${ICON_INSTALL_DIR}/breeze-dark/actions/22)
+if(KF5CoreAddons_VERSION VERSION_LESS "5.80")
+    INSTALL(FILES
+      16/keyframe.svg
+      16/keyframe-add.svg
+      16/keyframe-disable.svg
+      16/keyframe-duplicate.svg
+      16/keyframe-next.svg
+      16/keyframe-previous.svg
+      16/keyframe-record.svg
+      16/keyframe-remove.svg
+      16/add-subtitle.svg
+      DESTINATION ${ICON_INSTALL_DIR}/breeze-dark/actions/16)
+
+    INSTALL(FILES
+      22/keyframe.svg
+      22/keyframe-add.svg
+      22/keyframe-disable.svg
+      22/keyframe-duplicate.svg
+      22/keyframe-next.svg
+      22/keyframe-previous.svg
+      22/keyframe-record.svg
+      22/keyframe-remove.svg
+      DESTINATION ${ICON_INSTALL_DIR}/breeze-dark/actions/22)
+endif()