create shared niri config, refactor generic feature modules

modules/features/applications/gui/kitty.nix

@@ -1,25 +1,21 @@
-{ inputs, self, ... }: {
-  imports = [ (inputs.helpers.mkMirroredModulesFlakeModule "graphicsOptions" ({ lib, ... }: {
-    options.features.applications.gui.kitty.enable = lib.mkEnableOption "Kitty Terminal";
-  }))];
+{ inputs, self, ... }: let
+  optionName = "features.applications.gui.kitty.enable";
+in {
+  imports = [ (inputs.helpers.mkStandardFeature.flakeModule "graphics" optionName "Kitty Terminal") ];
 
   flake.nixosModules.graphics = { pkgs, config, lib, ... }: {
-    config = let
-    in lib.mkIf (config.features.applications.gui.kitty.enable) (inputs.helpers.mkIfElse (config.features.nixos.home-manager.enable) {
-      home-manager.users.${config.info.userName}.features.applications.gui.kitty.enable = lib.mkDefault true;
-    } {
+    imports = [ (inputs.helpers.mkStandardFeature.nixosModule { inherit config optionName; } {
       environment.systemPackages = [ pkgs.kitty ];
-    });
+    }) ];
   };
 
   flake.homeModules.graphics = { pkgs, config, lib, ... }: {
-    config = lib.mkIf (config.features.applications.gui.kitty.enable) {
+    imports = [ (inputs.helpers.mkStandardFeature.homeModule { inherit config optionName; } {
       programs.kitty = {
         enable = true;
-
         shellIntegration.enableBashIntegration = true;
         enableGitIntegration = true;
       };
-    };
+    }) ];
   };
 }