add settings & updater for KDE (#5863)

Co-authored-by: philippe44 <philippe_44@outlook.com>

config/desktop/bullseye/environments/kde-plasma/config_base/packages

@@ -32,11 +32,9 @@ fonts-opensymbol
 fonts-stix
 fonts-symbola
 fonts-ubuntu
-fonts-ubuntu-font-family-console
 foomatic-db-compressed-ppds
 gdebi
 ghostscript-x
-gnome-orca
 gnome-disk-utility
 gnome-screenshot
 gstreamer1.0-packagekit
@@ -86,6 +84,7 @@ pasystray
 pavucontrol
 pavucontrol-qt
 pavumeter
+plasma-discover
 policykit-1
 printer-driver-all
 profile-sync-daemon
@@ -96,6 +95,7 @@ slick-greeter
 smbclient
 software-properties-gtk
 spice-vdagent
+systemsettings
 system-config-printer
 system-config-printer-common
 terminator