Add colmena apply stage

configuration/common/default.nix

@@ -1,6 +1,7 @@
 { config, pkgs, ... }:
 {
   imports = [
+    ../../users/colmena-deploy
     ../../users/yuri
   ];
 
@@ -14,7 +15,7 @@
   security.sudo.wheelNeedsPassword = false;
 
   nix.settings = {
-    trusted-users = [ "@wheel" ];
+    trusted-users = [ "colmena-deploy" ];
     auto-optimise-store = true;
     experimental-features = [ "nix-command" "flakes" ];
   };