feat: sync DM packagechooser to netinstall-add with inline groups

- packagechooser_dm.conf (runtime + online ref): switch from netinstall-select
  to netinstall-add, move SDDM/LightDM/LXDM/greetd/LY packages inline into the
  chooser items; both copies byte-identical in content
- netinstall.yaml (runtime + online ref): drop the now-inline DM groups; bring
  the online ref's Default group in line with runtime (add falkon,
  networkmanager, pipewire, wireplumber)

iso-profiles/antergos/live-overlay/etc/calamares-online/modules/netinstall.yaml

@@ -14,9 +14,17 @@
     - antergos-next-keyring
     - antergos-wallpapers
     - antergos-grub-theme
+    - falkon
     - mesa
     - mesa-utils
     - vulkan-nouveau
+    - networkmanager
+    - network-manager-applet
+    - pipewire
+    - pipewire-alsa
+    - pipewire-pulse
+    - wireplumber
+
 
 - name: "Kernel"
   description: "Kernel and modules"
@@ -48,25 +56,6 @@
     - intel-ucode
     - amd-ucode
 
-- name: "Utilities"
-  description: "System Utilities"
-  selected: true
-  packages:
-    - antergos-lsb-release
-    - nano
-    - vi
-
-- name: "Devel"
-  description: "Development tools"
-  selected: false
-  packages:
-    - base-devel
-    - artools-base
-    - artools-iso
-    - artools-pkg
-
-
-
 - name: "Init Services"
   description: "Essential dinit services"
   selected: true
@@ -88,38 +77,19 @@
     - syslog-ng-dinit
     - power-profiles-daemon-dinit
 
-- name: "SDDM"
-  description: "SDDM display manager"
-  selected: false
+- name: "Utilities"
+  description: "System Utilities"
+  selected: true
   packages:
-    - sddm
-    - sddm-dinit
-    - pixie-sddm-git
+    - antergos-lsb-release
+    - nano
+    - vi
 
-- name: "LightDM"
-  description: "LightDM display manager"
+- name: "Devel"
+  description: "Development tools"
   selected: false
   packages:
-    - lightdm
-    - lightdm-dinit
-
-- name: "LXDM"
-  description: "LXDM display manager"
-  selected: false
-  packages:
-    - lxdm
-    - lxdm-dinit
-
-- name: "greetd"
-  description: "greetd display manager"
-  selected: false
-  packages:
-    - greetd
-    - greetd-dinit
-
-- name: "LY"
-  description: "LY display manager"
-  selected: false
-  packages:
-    - ly
-    - ly-dinit
+    - base-devel
+    - artools-base
+    - artools-iso
+    - artools-pkg