feat: Steamify's choices in the installer: a Steam Machine page (what to leave out) and a Start in page (gaming mode or desktop), passed to steamify.sh --defaults

archiso/airootfs/etc/calamares/modules/shellprocess_steamify.conf

@@ -4,7 +4,7 @@
 dontChroot: true
 timeout: 3600
 script:
-    - "-/usr/local/bin/steamify-install ${ROOT} ${USER}"
+    - "-/usr/local/bin/steamify-install ${ROOT} ${USER} \"${gs[packagechooser_steamifyskip]}\" \"${gs[packagechooser_steamifyboot]}\""
 
 i18n:
     name: "Setting up the Steam Machine (Steamify)"