Hint secure boot imports in generated host

scripts/install-btrfs.sh

@@ -220,6 +220,9 @@ if [ ! -e "${host_file}" ]; then
     inputs.lix-module.nixosModules.lixFromNixpkgs
     ../modules/system/base.nix
     ../modules/users/admin.nix
+    # Uncomment to enable Secure Boot after install:
+    # inputs.lanzaboote.nixosModules.lanzaboote
+    # ../modules/system/secure-boot.nix
     ./${HOSTNAME}-hardware.nix
   ];