[launchers] Add launcher wrappers for compact env

Adds a module to launch specific nixpkgs dynamically, such that they
won't be always included in the nix store

home/home-laptop-compact.nix

@@ -18,7 +18,14 @@
     media.enable = true;
     sync.enable = true;
     kubectl.enable = true;
-    # office.enable = false;  # Excluded for storage constraints
+
+    # Launcher wrappers for excluded/optional packages
+    launchers = {
+      enable = true;
+      packages = [
+        "libreoffice"
+      ];
+    };
   };
 
   targets.genericLinux.enable = true;