Move firefox into module and clean useless folder

hosts/darwin/home/users/alistreaza.nix

@@ -27,16 +27,14 @@
 
     # Nix & languages env deps
     home.env.nix.enable = true;
-    home.env.jdk.enable = true;
-    home.env.rust.enable = true;
-    home.env.python.enable = true;
-
-    home.packages = [ ];
 
     # No Home Application Folders
     targets.darwin.linkApps.enable = false;
     targets.darwin.copyApps.enable = false;
 
+    # Home packages
+    home.packages = [ ];
+
     # The state version is required and should stay at the version you
     # originally installed.
     home.stateVersion = "25.11";