feat: enable recursive submodule initialization in git config

Set `submodule.recurse` to true in the git configuration. This change ensures that all submodules are automatically initialized and updated recursively.

modules/home/tools/git/default.nix

@@ -61,6 +61,7 @@ in
           smudge = "${pkgs.metacfg.rot8000}/bin/rot8000";
         };
         http.sslCAinfo = "/etc/ssl/certs/ca-certificates.crt";
+        submodule.recurse = true;
       };
     };
   };