Restructure NixOS host configuration files

nix/hosts/lemp11/default.nix

@@ -1,32 +0,0 @@
-{ ... }:
-
-{
-  features = {
-    cli = {
-      docker.enable = true;
-    };
-
-    desktop = {
-      autorandr.enable = true;
-      gaming.enable = true;
-      peek.enable = true;
-    };
-
-    homelab = {
-      forgejo.enable = true;
-      gitea.enable = true;
-      immich.enable = true;
-      jellyfin.enable = true;
-      paperless.enable = true;
-      pihole.enable = true;
-      tubearchivist-container.enable = true;
-    };
-  };
-
-  imports = [
-    ../common
-    ../../users/opdavies
-
-    ./configuration.nix
-  ];
-}