add ghostty fish integration

dot_config/private_fish/config.fish

@@ -1,6 +1,9 @@
 if status is-interactive
     # Commands to run in interactive sessions can go here
     functions -q _insert_jj_after_git; and _insert_jj_after_git
+    if set -q GHOSTTY_RESOURCES_DIR
+        source "$GHOSTTY_RESOURCES_DIR/shell-integration/fish/vendor_conf.d/ghostty-shell-integration.fish"
+    end
     if type -q zoxide
         zoxide init fish | source
     end
@@ -22,4 +25,3 @@ end
 alias ls="lsd"
 
 set -gx EDITOR nvim
-