feat(profile): improve kde integration

See #208

apparmor.d/groups/freedesktop/xdg-desktop-portal

@@ -123,10 +123,13 @@ profile xdg-desktop-portal @{exec_path} flags=(attach_disconnected) {
   /usr/share/xdg-desktop-portal/** r,
 
   /etc/pipewire/client.conf.d/ r,
+  /etc/sysconfig/proxy r,
 
   /var/lib/flatpak/exports/share/mime/mime.cache r,
   /var/lib/flatpak/exports/share/applications/{**,} r,
 
+  @{user_config_dirs}/kioslaverc r,
+
   owner /tmp/icon* rw,
 
   owner @{run}/user/@{uid}/.flatpak/{,*/*} r,