Move Zoxide configuration out of shell config

nix/modules/fish/default.nix

@@ -1,11 +1,7 @@
 { config, lib, pkgs, ... }:
 let tide_conf = builtins.readFile ./tide_config.fish; in
 {
-  programs.zoxide = {
-    enable = true;
-    enableFishIntegration = true;
-    options = ["--cmd j"];
-  };
+  programs.zoxide.enableFishIntegration = true;
 
   programs.fzf = {
     enable = true;