mv firefox to module

hosts/desktop1/configuration.nix

@@ -12,6 +12,7 @@
     steam.enable = true;
     prism.enable = true;
     fzf.enable = true;
+    firefox.enable = true;
   };
 
   home-manager = {
@@ -97,7 +98,5 @@
     ];
   };
 
-  programs.firefox.enable = true;
-
   programs.zsh.enable = true;
 }