[KDE] add oxygen by default

- see also https://gitlab.manjaro.org/profiles-and-settings/iso-profiles/issues/139

manjaro/kde-dev/Packages-Desktop

@@ -99,7 +99,7 @@ octopi
 #octopi-cachecleaner
 #octopi-repoeditor
 #octopi-notifier-frameworks
-pamac-qt
+#pamac-qt
 #manjaro-application-utility
 
 ## Printing

manjaro/kde/Packages-Desktop

@@ -169,8 +169,8 @@ user-manager
 gnome-icon-theme
 gnome-themes-standard
 gtk-theme-breath
-#>extra oxygen
-#>extra oxygen-icons
+oxygen # needed to provide KDE system sounds
+oxygen-icons
 plasma5-themes-breath  # Default
 sddm-breath-theme  # Default
 grub-theme-manjaro
@@ -325,6 +325,8 @@ xorg-xkill
 perl-file-mimeinfo
 xdg-utils
 xdg-su
+>extra timeshift
+>extra kernel-alive
 
 ## Misc
 manjaro-hotfixes

manjaro/xfce/Packages-Desktop

@@ -274,6 +274,8 @@ xorg-xkill
 perl-file-mimeinfo
 xdg-utils
 xdg-su
+>extra timeshift
+>extra kernel-alive
 
 ## Misc
 gtkhash-thunar