flake update and add ghostty

programs/ghostty/default.nix

@@ -0,0 +1,28 @@
+{ pkgs, ... }:
+let
+  my_settings = {
+    auto-update = "off";
+    copy-on-select = "clipboard";
+    font-family = "SF Mono";
+    font-size = 16;
+    macos-titlebar-style = "transparent";
+    mouse-hide-while-typing = true;
+    split-divider-color = "orange";
+    theme = "Builtin Tango Dark";
+    window-inherit-working-directory = true;
+    window-save-state = "always";
+    working-directory = "home";
+    keybind = [
+      "shift+enter=text:\n"
+    ];
+  };
+in
+{
+  programs.ghostty = {
+    enable = true;
+    enableFishIntegration = true;
+    installVimSyntax = true;
+    package = pkgs.ghostty-bin;
+    settings = my_settings;
+  };
+}